You should watch:

The Vengeance Factor

This was episode number 9 of season 3.

The following characters appeared in this episode:

(as Elkanah J Burns)Temarek

(voice) (uncredited) Enterprise Computer

Brull

Captain Jean-Luc Picard

Chorgan

Counselor Deanna Troi

Commander Wiliam T Riker

Doctor Beverly Crusher

Lieutenant Worf

Lt Commander Data

Lt Commander Geordi La Forge

Sovereign Marouk

Volnath

Wesley Crusher

Yuta