adrian find key quest

just installed Adrian . But i cant get him to join . I dont have key needed to finish his quest . Please help.

Adrian is found towards the end of Irenicus' dungeon and is guarded by a number of duergar. Once you've killed them, you should find a key on one of their bodies - Adrian will react to it as soon as you've picked it up. From there, dialogue will guide you into getting him into your party.

 

Quick answer: It's on a nearby duergar corpse, not in a container.