Jake and the Fatman to Love That Bob

Diagnosis Murder was a spinoff of Jake and the Fatman.

Mannix returned to TV on an episode of Diagnosis Murder to solve an old unsolved case with the help of Dr Mark Sloan.

Here's Lucy's Lucy Carter and Mannix's Mannix are held hostage in an episode of Here's Lucy.

Here's Lucy's Lucy Carter was visited in two episodes by The Bob Cummings Show's Bob Collins.

The Bob Cummings Show was repackaged and ran in syndication as Love that Bob.