Do you mean the poisoned imp? The monster you need to find is on the same level, east and south of the 2 imps in the kitchen. Past the 2 doors controlled by levers that you have to split your characters up to get past, there is a locked door with no apparent way to open it... <span class='standouttext'>Spoiler : </span><span class='spoiler'>click on the torch beside the door to open it (the hint is that all of the other torches in the room are unlit, and there were other passages earlier controlled by torches).</span> (highlight the text to read)
