The One Who Leaked Their Whereabouts

As Lupin recounted what had happened, scenes flashed through Wade's mind as well.

A curse like that could never have been set up with a mere wave of the hand.

Whoever had done it would have needed at least five to ten minutes to complete it.

Though this street was secluded, it was not entirely devoid of passersby. Besides, there were quite a few wizards staying at the nearby inn.

Even if all the other guests had been accomplices of the attacker, Sirius and the Weasleys had been there. If they had noticed anything, they would not have stood by and watched someone set a trap.

Muggles could have been driven away with spells like the Confundus Charm or Expelling Charm, but Wade had found no traces of such spells nearby. Before they arrived, there had not been significantly fewer Muggles on the street than usual.

So...

The attacker had not cared whether Muggles might be caught in the blast. That was the usual cold-blooded behavior of Dark Wizards.

But to completely prevent those wandering Muggles from accidentally triggering the trap...

Just as everyone suspected, the other party must have been able to pinpoint the perfect time to act and had known Wade and the others' whereabouts.

Yet the only people who could have done that perfectly were Moody and Lupin, who had been traveling with him all along. And those two were the least likely people to betray him.

Setting aside his companions...

Face after face flashed through Wade's mind.

Madam Piquery, Stella, the bodyguards and maids, Elijah Watkins standing outside the iron gate, the taxi driver, the people running shops on either side of the inn, the frightened passersby...

When viewed with suspicion, every one of them seemed suspicious.

But upon closer consideration, none of them had the