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Identity Crisis

This was episode number 18 of season 4.

The following characters appeared in this episode:

(uncredited)Brevelle
(credit only) Counselor Deanna Troi
(voice) (uncredited) Enterprise Computer
Captain Jean-Luc Picard
Commander Wiliam T Riker
Doctor Beverly Crusher
Ensign Graham
Hickman
Lieutenant Worf
Lt Cmdr Susanna Leitjen
Lt Commander Data
Lt Commander Geordi La Forge
Nurse Alyssa Ogawa
Transporter Technician