Hogan's Heroes S02 E23 Everyone Has a Brother-in-Law

"I see nothing; I know nothing"

Captain Kurtz, General Burkhalter's annoying, ambitious brother-in-law, becomes the camp's tough new adjutant. What's worse he's keeping a watchful eye on every corner of Stalag 13, and ends up getting in the way of Hogan's plans to blow up an enemy munitions train.