You should watch:

Devil's Due

This was episode number 13 of season 4.

The following characters appeared in this episode:

(uncredited)Jacob Marley (Ghost)

Acost Jared

Ardra

Captain Jean-Luc Picard

Counselor Deanna Troi

Commander Wiliam T Riker

Doctor Beverly Crusher

Devil Monster

Dr Howard Clarke

Klingon Monster

Lieutenant Worf

Lt Commander Data

Lt Commander Geordi La Forge