Mannix to The D.A.
5 connections
Mannix
Diagnosis: Murder
Mannix returned to TV on an episode of Diagnosis Murder to solve an old unsolved case with the help of Dr Mark Sloan.
Matlock
Diagnosis Murder's Dr Mark Sloan was defended by Matlock when Sloan was accused of murder
Emergency!
Both feature the fictional Trans Global Airlines
Adam-12
Emergency! had a crossover with Adam-12 to find a boy who ran away from the hospital.
The D.A.
Adam-12 had a two part crossover with The D.A.