The city council had a serious decision to make right now. Their jail wasn't large enough that they could hold all the prisoners that had been captured by the Oath Breakers, but none of them truly trusted them to be anywhere that wasn't secured.
They still had their friends list active and had no doubt sent messages back to their allies long before they arrived at the city, so Morgeth would know that things had gone wrong here, and would make it his first target for capture.
The best thing to do was to use the spell against them and see what they knew about their employer's actions so far.
"Is Morgeth coming here now? I would assume that some or all of you sent out messages before Cain had that spell put on you, so he must know by now that all of his scouts for the city have been captured." Prana asked.