You should watch:

Cause and Effect

This was episode number 18 of season 5.

The following characters appeared in this episode:

(uncredited) Ensign Jae
Captain Bateson
Captain Jean-Luc Picard
Counselor Deanna Troi
Commander Wiliam T Riker
Doctor Beverly Crusher
Ensign Ro Laren
Lieutenant Worf
Lt Commander Data
Lt Commander Geordi La Forge
Nurse Alyssa Ogawa