
Mark Sloan, the physician‑detective, believes his longtime patient Nick Osborn is innocent of his boss’s murder. Determined to uncover the truth, he leads the investigation, aided by his junior doctor and a young female pathologist who help analyze clues and evidence.
Does Diagnosis Murder: Diagnosis of Murder have end credit scenes?
No!
Diagnosis Murder: Diagnosis of Murder does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of Diagnosis Murder: Diagnosis of Murder, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Dick Van Dyke
Mark Sloan

William Atherton
Eric Walker

Bill Bixby
Nick Osborne

Cynthia Gibb
Amanda Bentley

Mariette Hartley
Kate Hamilton

Michael MacRae
Mr. Foss

Eliza Roberts
Mrs. McKinney

Barry Van Dyke
Steve Sloan

Brynn Thayer
Anita Clifford

Vernee Watson-Johnson
Esther Wiggins

Stephen Caffrey
Jack Parker

Ken Kercheval
Frank Stevens

Shannon Marketic
Jackie Cole (uncredited)

Shane Meier
Paul McKinney

Arthur Duncan
Mr. Simms

Richard Redlin
Russell Cord
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