Some of TV's earliest crimesolvers are spotlighted in a collection of four small-screen whodunits. Episodes from "Colonel March of Scotland Yard" (starring Boris Karloff), "Mr. and Mrs. North" (with Richard Denning and Barbara Britton), "Public Prosecutor" (with John Howard), and "Detective Mark Saber" are featured. 97 min. total. Standard; Soundtrack: English. Plays All Regions.