Pools of Darkness
It is the fourth ( and final ) entry in the "Pool of Radiance" series of Gold Box games , and the story is a continuation of the events after "Secret of the Silver Blades" . 
<triplet> Pool of Radiance <subj> Secret of the Silver Blades <obj> has part <triplet> Secret of the Silver Blades <subj> Gold Box <obj> part of the series