Chapter Summaries

Batwoman and Batman recruited Mister Freeze by keeping his wife alive with the Final Machine, and he shared an underground route into Arkham Island. Meanwhile, Barry and the Waverider team learned of the plan, and Bobo claimed he could disable the cannon himself.

• Batwoman used the Final Machine to stabilize Mister Freeze's wife, and Batman warned that it could only sustain her temporarily.
• Mister Freeze agreed to help reverse the giant cannon's freezing effect and revealed underground tunnels built by Thomas Wayne.
• Batwoman planned to travel with Mister Freeze while Jack and Batman held off the villains, using seven vehicles to disguise their route.
• Barry returned to the Waverider team with a map of Gotham's underground network and explained the shell-game plan.
• Bobo said he could disable the cannon and remove the Mind Control effects himself, and Sara directed the team to focus on defeating the villains.

Batwoman and Jack led the seven Batmobiles through the tunnels to seize Female Joker’s giant cannon, while an unseen ally silently cleared the villains and barricades blocking their routes. The chapter ended with Batwoman and Jack spotting a streak of red electric light on the rear-camera footage.

• Batwoman instructed the teams to prioritize capturing the giant cannon, avoid damaging the tunnels, and prepare for Female Joker to discover them.
• Nightwing and Commissioner Gordon reported being trapped by Killer Croc, Bane, and Poison Ivy, but an unseen helper knocked out the villains, freed them, and repaired their cars.
• Batwoman and Jack speculated that Harley had found help as reports arrived that the other teams had also been rescued by an invisible ally.
• The unseen ally dismantled Penguin’s barricade, weapons, and traps, then left Penguin and his men unconscious, cuffed, and tied up.
• Batwoman slowed the rear-camera footage and saw a streak of red electric light in the tunnel.

Batwoman and Jack emerged from the tunnel to find the island’s villains already captured by a group of apparent interdimensional visitors. After they introduced themselves, Batwoman learned the giant cannon still needed to be stopped, with Female Joker and Mad Hatter working its controls.

• Jack hid a gun and told Batwoman to kill him if he lost his mind, but she refused.
• Batman drove the Batmobile out of the tunnel, and Batwoman and Jack found the villains bound and unconscious in a sheltered freight yard.
• Batwoman spotted Bobo and the strangers in skintight suits, then approached them after her tranquilizer injection failed to dispel the apparent hallucination.
• Bobo described the group as kind aliens, and Barry apologized for capturing the villains while Batwoman inferred they came from a parallel universe.
• Bobo pointed out the untouched Ultimate Weapon, and Batwoman saw Female Joker and Mad Hatter operating its controls as the barrel turned.

Batman and Jack confronted the Female Joker and the Mad Hatter atop Arkham Island’s giant cannon, but a mysterious owl-masked assassin killed the Female Joker before they could act. The assassin seized the Mad Hatter and, after ignoring Jack and Batman’s appeals, threw him off the platform.

• Batman carried Jack to the top of the cannon turret, where the Female Joker threatened Gotham with a detonator and demanded Batman jump to his death.
• Jack pretended to be Joker and distracted the Female Joker while Batman acted as though he would obey her.
• A woman in an owl mask appeared behind the Female Joker and killed her with a dagger before Batman could warn her.
• The assassin knocked Batman’s Batarang aside, grabbed the Mad Hatter, and moved to the platform’s edge.
• Jack and Batman tried to calm the assassin, but she mocked them and flung the Mad Hatter into free fall.

Su Ming, disguised as a female Talon, killed Female Joker and planted a threat and a mystery for Jack before escaping. Bobo reversed the giant cannon and thawed Gotham, while Batwoman arranged to question him afterward.

• Su Ming used Batwoman's brief absence to tell Jack that Gotham belonged to a mysterious organization and warn him not to investigate its secrets.
• Jack examined Female Joker's corpse and questioned the assassin, who escaped before Batwoman returned.
• Batwoman and Jack focused on reversing the giant cannon, and Bobo climbed to the controls and reprogrammed it.
• Bobo activated the cannon, melting the ice and freeing Gotham's frozen residents.
• Batwoman asked Bobo about the assassin, then planted explosives on the cannon and asked him to wait so they could talk.

Su Ming, posing as Deathstroke, gained Commissioner Gordon’s trust and arranged for the two Harleys to help bring Jack and Dr. Quinzel together. As the group prepared to pursue its larger plan, the reunion appeared to go smoothly.

• Su Ming explained the group’s intentions to Gordon and won his confidence with a speech about hope and Gotham’s future.
• Sara and her crew struggled to hide their reactions as Deathstroke imitated Superman’s inspirational rhetoric.
• Su Ming introduced himself to Gordon as Slade and strengthened their new friendship.
• The two Harleys arrived, and Deathstroke’s Harley signaled that she had befriended Dr. Quinzel.
• Dr. Quinzel ran to Jack, and the two clasped hands tearfully.

Batwoman returned to the Batcave, read Alfred’s final letter, and considered trusting others as she grieved. Meanwhile, Su Ming prepared to find the next assassination target in Gotham.

• Su Ming persuaded Jack to travel to Earth-0 with Batwoman, but Batwoman said she would think about it and destroyed the giant cannon.
• Su Ming sent Captain to take the Pale Knight and Dr. Quinzel aboard the ship, then left to keep Batwoman occupied.
• Batwoman returned to the Batcave, remembered Alfred, and finally read the letter he had left for her.
• Alfred’s letter urged Batwoman not to face grief alone, and she decided she might trust certain people before heading out for a drink.
• Su Ming drank with Strangle and the Symbiotes, then set off for the Department of Transportation to find the next target’s address.

Su Ming decided to kill Jean-Paul before he could become Deathstroke and drive Batwoman into a killing spree. At a church, Priest began revealing Gotham’s secrets to the dying veteran and urged him to spread the Lord’s glory.

• Su Ming used Strangle to search the transportation office’s database and locate Jean-Paul.
• Su Ming resolved to kill Jean-Paul before his feud with Bruce Wayne could turn him into a killer.
• Jean-Paul cleaned floodwater from a church while Priest asked about his pain and urged him to rest.
• Jean-Paul confessed that he had killed more than a hundred thousand people with biochemical weapons during the Vietnam War.
• Priest hinted at a secret about Jean-Paul’s family and Gotham, and Jean-Paul asked how he could spread the Lord’s glory.

A priest told Paul and Jean-Paul the hidden history of Gotham, recounting how Edmund Wayne and Bakar Van Ray overthrew Governor Raphael Arkham before falling into a civil war. Jean-Paul learned that he was the last Van Ray, while the Wayne family’s secret obligation to help his family had been forgotten.

• The priest explained that Raphael Arkham ruled early Gotham through torture and madness after drinking a wine-red liquid.
• Bakar Van Ray rescued Edmund, trained him during their voyage, and brought him and the Order of St. Dumas to Gotham to overthrow Arkham.
• Edmund and Bakar organized Gotham’s residents, defeated Arkham, and freed the city.
• After Edmund refused to give Gotham to the order, Bakar accused him of being a vampire and started a civil war.
• Edmund killed Bakar, confiscated the order’s property, and spared the Van Ray family, which later declined after the Waynes forgot their duty to help it.
• The priest revealed to Jean-Paul that he was the last member of the Van Ray family and told him the story of Gotham’s past.

Jean-Paul embraced the Order’s mission to kill Bruce Wayne and was given command of a fanatical squad of elderly Paladins. As the armed believers prepared to attack, the figure of God on the cross opened his eyes and denied giving them their orders.

• Jean-Paul mistook his cancer-driven pain relief and the Priest’s story for divine revelation, then vowed to fight for the Lord’s glory.
• The Priest armed Jean-Paul with a sword and introduced elderly Paladins from Sardinia, one of whom collapsed and died after proclaiming his faith.
• The Priest declared Bruce Wayne the source of Gotham’s sin, and Jean-Paul and the Paladins armed themselves to kill him.
• The Priest led the believers in a prayer to purify Gotham, but God on the cross opened his eyes and said he had never commanded them to do it.

Su Ming posed as a living Jesus in the church, killed the Order of St. Dumas members, and began staging a grisly crime scene. He planned to give Batwoman a mystery that would keep her from following Jack to the Main World.

• Jesus tore free from the cross and rebuked the Priest for falsely claiming to act on God's orders.
• Paul mistook Jesus for a pagan god and led the knights in firing at him, but the bullets could not harm him.
• Jesus unleashed a blinding, freezing light that killed everyone in the church, while Strangle's tentacles briefly appeared.
• Su Ming ordered Strangle to seal the church, block the windows, and destroy the surveillance equipment and recordings.
• Su Ming began arranging the bodies into a scene inspired by Hannibal and told Strangle to carve antlers from a bench.

Jack, Dr. Quinzel, and Deathstroke left for the CW Multiverse while discussing the grisly church murders keeping Batwoman in Gotham. Elsewhere, Luthor’s group infiltrated the Justice League headquarters to take a blood sample from the infected Gordon, who claimed the virus was a belief rather than a disease.

• Deathstroke offered to help Batwoman investigate a church killing in which victims’ brains and organs were missing and their bodies had been arranged with wooden antlers.
• Jack said Batwoman was investigating the murders and had stayed in Gotham because the Court of Owls remained at large.
• Joker used Batwoman’s voice, fingerprints, and retinal scan to open Gordon’s cell beneath the Hall of Justice.
• Luthor drew blood from Gordon to study the Batman Who Laughs Virus, while Gordon called it an enlightenment rather than a disease.
• Luthor dismissed Gordon’s claims, said he would make an antidote, and left with the sample.

As Constantine’s soul left his body to save Zatanna, the Heroes guarded her while she endured a nightmare in The Upside-Down Man’s Magic Dimension. The monster offered Zatanna a deal, claiming she could resurrect her father and had no choice but to listen.

• Luthor and his group quietly left the Hall of Justice with a canister of blood.
• Abby warned the Heroes that Constantine’s soul had left his body and that they must not disturb the magic circle; Raven cast defensive spells around Zatanna.
• Raven asked whether Abby could see Zatanna’s dream, and Abby explained that Zatanna had to withstand the Nightmare herself.
• Zatanna dreamed that her father, Giovanni Zatara, was burning and begged her to save him, but she could not use her magic.
• The Upside-Down Man appeared in his Magic Dimension, revealed that Zatanna was not simply dreaming, and offered to discuss a deal that could resurrect her father.

Zatanna learned that the Upside-Down Man had held her father Giovanni’s soul since a battle beyond the Source Wall, and it offered to return him in exchange for a deal. Batman appeared as its adviser, proposing that Zatanna help direct the creature’s power as a countermeasure against Deathstroke.

• The Upside-Down Man revealed that Giovanni and six other sorcerers had crossed the Source Wall to stop its invasion, and that it had captured four of their souls, including Giovanni’s.
• Zatanna learned that Constantine had hidden the truth from her to protect her, and she asked the Upside-Down Man what it wanted in return for her father.
• The Upside-Down Man explained that it wanted to grow stronger after learning about Vishanti, and said Deathstroke had exposed it to powers it could not join.
• The Upside-Down Man brought Batman through a portal to help plan against Deathstroke, and Batman told Zatanna that she could direct the creature’s power if she agreed to a deal.

Constantine arrived in The Upside-Down Man’s dimension and exposed its fake Batman as a ploy to pressure Zatanna into accepting a deal. He summoned Heaven’s forces to distract the monster and prepared to escape with Zatanna.

• The Upside-Down Man transformed its dimension into a grassland and used a fake Batman to pressure Zatanna into accepting its offer.
• Constantine burst into the dimension and destroyed the fake Batman, then explained that it was an illusion rather than the real Batman.
• Constantine accused The Upside-Down Man of trying to manipulate Zatanna and use her to threaten him.
• The Upside-Down Man attacked Constantine, who summoned angels with a heavenly spell to overwhelm the monster and disrupt its control of the dimension.
• Constantine pulled out a key and urged Zatanna to crawl with him as they tried to escape.

Constantine and Zatanna escaped the battle with the Upside-Down Man and returned to their bodies, but Constantine left despite Zatanna asking him to stay. Meanwhile, Luthor and Joker began planning to involve Doctor Ivo in making a serum tied to fear and Batwoman’s weapon.

• Constantine and Zatanna escaped through a portal as Heaven’s weapons attacked the Upside-Down Man, then awoke in their bodies at Justice League Dark headquarters.
• Zatanna thanked Constantine for saving her, slapped him for risking himself with Demon Blood, and cried as he left through another portal.
• Beast Boy asked Garth why Zatanna cried after slapping Constantine, and Garth gave him a joking explanation based on physics.
• Luthor told Joker that wearing women’s clothes made him fear he had lost something precious, and Joker connected that fear to Batwoman’s weapon and the Batman Who Laughs’s virus.
• Luthor suggested they recruit Doctor Ivo to help make the serum, and Joker promised to persuade him while asking Punchline for a camera.

Su Ming left Jack Napier and Dr. Harleen Quinzel at Wayne Manor to investigate the Joker Virus and learn about the Court of Owls, then took his team toward the CW Multiverse. He revealed that he was seeking the Silver Bullet, an ultimate weapon against The Batman Who Laughs.

• Su Ming left Jack Napier and Dr. Harleen Quinzel with Alfred at Wayne Manor while Batwoman was absent.
• Jack asked about the Court of Owls, and Alfred agreed to tell him about the threat.
• Su Ming and his team left Wayne Manor with Bruce's wine, and Su Ming admitted he had killed people who would later kill Commissioner Gordon.
• Su Ming explained that the killings had also yielded religious knowledge he needed for their next move.
• Su Ming ordered the Waverider to the CW Multiverse and revealed that he was looking for the Silver Bullet.

Su Ming and Sara discussed whether preserving so many Parallel Worlds was wise as Entropy Increase threatened the future. They agreed that the immediate priority was to find and defeat The Batman Who Laughs, though his location remained unknown.

• Su Ming’s crew continued its multiverse jump while Adjutant worked on distinguishing overlapping multiverses through coordinates and parameters.
• Sara asked Su Ming whether saving so many Parallel Worlds was the right choice given the disappearance of powerful figures from the Main Multiverse.
• Barry explained Entropy Increase and the scientific meaning of entropy, but Harley fell asleep during his explanation.
• Su Ming told Sara to consider the larger Infinite Universe rather than focusing on the apparent disorder of the Parallel Worlds.
• Bobo pointed out that they did not know where The Batman Who Laughs was, and Su Ming said Batwoman and Joker might be able to find him or provide clues.

Batwoman investigated metal-related clues to find The Batman Who Laughs and planned to use The Upside-Down Man as a lead. In Gotham, Joker hired Mercenary to invite people to a party in the Red Pool beneath the city.

• Batwoman ruled out magic and technology as The Batman Who Laughs's methods and searched the multiverse for cases involving precious metals.
• Batwoman planned to let The Upside-Down Man seek out The Batman Who Laughs, then headed to Earth-3 to meet Owlman.
• Joker's phantom questioned Batwoman about her identity and The Batman Who Laughs, but she dismissed him and insisted their game would not be affected.
• Joker met Mercenary in Gotham's sewers and secured his agreement by offering him a dolphin photo album collection.
• Joker gave Mercenary an object and tasked him with delivering invitations to a party at the Red Pool, telling him to break anyone's limbs if they refused.

Deathstroke, Harley, and Bobo watched a bloodied priest bury two angelic bodies outside a church in Anvil Town. Deathstroke planned to distract the priest and a vampire inside so Harley and Bobo could steal the bodies for his purposes.

• Deathstroke explained that a God ruled this Earth and that Gideon could not see its future, leaving the group without help from the Legends of Tomorrow.
• Harley, Deathstroke, and Bobo watched a mustached priest drag two disemboweled corpses from the church and begin burying them beneath a tree.
• Deathstroke revealed that the corpses were abandoned human forms of immortal angels and said he needed their bodies.
• Deathstroke spotted a vampire inside the church and planned to draw its attention while Harley and Bobo stole the angelic bodies.
• Strangle transformed Deathstroke into a handsome vampire, and Deathstroke used the Cloak of Levitation to steal bags of blood as bait.