Pools of Darkness

With Phlan in peril once more, Ren must rely on unlikely allies to find his missing friends and free the city from the grip of evil
 
The entire city of Phlan has vanished, ripped from the surface of Toril by dire creatures and magical forces. While the minions of the evil god Bane bicker over the spoils, the brave citizens of Phlan mount a stubborn defense.
 
A ranger-thief named Ren seeks his missing friends, Shal Bal and Tarl Desanea, spellcasters nonpareil. But to do so, Ren must band together with a mysterious sorceress and her intrepid shapershifter cat, as well as a couple of droll druids and a fearful knight who is absolutely, positively dead.
 
Based on the computer game of the same name, this classic Forgotten Realms novel revisits the heroes of Phlan ten years after the city was saved in the best-selling novel and computer game Pool of Radiance.