Last session my RotRL party made to the end of Hook Mountain Massacre. Although they were successful in defeating Barl, he along with 2 other villains over the course of the adventure managed to escape (the others being 1 of the hags at the Hook Mountain lair and Lucrecia, who has plagued the PCs with minor problems for several sessions since she was first encountered in Fort Rannick). Tomorrow I'll start the PCs on Curse of the Riven Sky, which fits well between HMM and FotSG, but afterward would like to have Barl and company recur. While I could have the trio either go their seperate ways or join with their more powerful brethern later in the adventure, I'd like to have theme scheme revenge together, perhaps in their masters' names (it would have been great if Erylium didn't take a critical heavy crossbow shot to the face and either Foxglove or Ironbriar made it out alive to round round out the foul menagerie), but I'm at a loss for what side adventure to concoct for these foes. Between them they have quite the arsenal of tricky magic. Any suggestions?