Adley had chosen to do this. Su Xiao guessed that Douglas had most likely approached them earlier and tempted them with benefits, prompting them to attack Tiffany.
Without Douglas, Adley and the others would not have been able to complete thirty-two commissioned missions in such a short time, even though their Adventurer Team had a total of 165 members.
The commissioned missions Adley took on all involved supernatural incidents related to Dark Demons and Wraiths.
After Adley began cooperating with Douglas, these commissioned missions were no longer a problem. As one of the three giants of the Dark Prison, Douglas knew every supernatural incident in Sodo City like the back of his hand. Without his tacit approval, neither Dark Demons nor Wraiths would dare appear in Sodo City.
The profits from completing thirty-two commissioned missions in a short time, along with the benefits Douglas offered, tempted Adley. After all, he and his team were not doing well in the Watch Guild.
Before fleeing, Adley had made one last profit by attacking the proxy manager of Shelter House. Afraid of retaliation from the Watch Guild, Adley chose to pin the blame on the dead—in other words, that pair of contractor lovers.
Adley and his team had one huge advantage: after fleeing, they would not be cut off from all sources of income. They could still go mining.
Douglas clearly did not care much about Adley. His previous arrangement had probably just been meant to annoy Su Xiao for no particular reason while conveniently eliminating Tiffany, whose abilities made people extremely wary.
Although Tiffany had not died, it was unlikely that she would appear again. That female Hunter had probably gone somewhere else to open a fortune-telling shop and deceive girls lost in life. It was nothing strange. Tiffany's original partner had