Naerth has fallen...
long story, players kill the mayer of Bremen cause he's annoying. Realize their actions have consequences and retreat to Targos. Naerth agrees to fake the murder as an accident or a wild reghed attack for the party. In return, they rescue Garret from Caer Konig and force him to work for the Zhent. Harper spy told contact their suspicions of Naerth being with the Zhent, from clues I'd left hidden. They go rescue Garret and he begrudgingly agrees to work for Naerth in payment for his life being saved. Party then has moral dilemma and decides they're going to kill Naerth.
I'd set up a harper ambush for Naerth, they had poisoned the food and orchestrated a feast for Garrett's return. One of the veteran guards was a harper agent in disguise, I gave the spy coded messages for them to know there was a harper attack and to not eat the food. They decided instead to attack Naerth and his body guards in open combat after they failed to convince him to let Garrett walk free.
I decided to not tpk the party and halved the health and only gave one attack to the Veteran's and the party almost tpk'd anyways.
The original plan was that they eat the food, become unconscious, harper guy kills the Zhent agents and Naerth and stages a reghed attack on the town hall using corpses of the Wolf clan and using their weapons to inflict the killing blows.
Now im thinking becuase of all the noise and explosions that the whole militia is turned up outside the door of the town hall.
At this point can I save them?