Detective Ellery Queen has to solve a series of murders where the victims were killed in numerically descending ages, the male victims were strangled with blue cords and the female victims with pink ones.
Richard Levinson
Writer
Barry Shear
Director
William Link
Writer

Peter Lawford
Ellery Queen

Harry Morgan
Insp. Richard Queen

E.G. Marshall
Dr. Cazalis

Skye Aubrey
Christy

Stefanie Powers
Celeste

Coleen Gray
Mrs. Cazalis
Morgan Sterne
Police Commissioner

Bill Zuckert
Sgt. Velie

Bob Hastings
Hal Hunter
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