Barnaby Jones/Design for Madness
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Design for Madness is the fifth episode of the eighth season of Barnaby Jones, and the one hundred sixty-first episode overall.
with Special Guest Star: Lynn Carlin (Mary Baines)
Barnaby's one of the witnesses when his niece, already suspected of killing her husband, shoots and kills her lawyer while in a trance-like state. He suspects that someone is out to drive her insane.