You should watch:

Sins of the Father

This was episode number 17 of season 3.

The following characters appeared in this episode:

(uncredited)Klingon Assassin #1

(uncredited)Klingon

(uncredited)Klingon Assassin #2

(archive sound) (uncredited) Enterprise Computer

(as Teddy Davis) Transporter Technician

Captain Jean-Luc Picard

Counselor Deanna Troi

Commander Wiliam T Riker

Doctor Beverly Crusher

Duras

Kahlest

K'mpec

Kurn

Lieutenant Worf

Lt Commander Data

Lt Commander Geordi La Forge

Wesley Crusher