They Only Kill Their Masters (1972)

They Only Kill Their Masters is a 1972 mystery movie (released by MGM) starring James Garner, with a supporting cast featuring Katharine Ross, Hal Holbrook, June Allyson, Tom Ewell, Peter Lawford, Edmond O'Brien, and Arthur O'Connell. The title refers to Doberman dogs that might have been responsible for a woman's murder currently under investigation by the local sheriff (Garner). The film was written by Lane Slate and directed by James Goldstone.

James Garner as Abel Marsh
Katharine Ross as Kate Bingham
Hal Holbrook as Warren Watkins
Harry Guardino as Daniel Streeter
June Allyson as Mrs. Watkins
Tom Ewell as Walter
Peter Lawford as Campbell
Edmond O'Brien as George
Arthur O'Connell as Ernie
Ann Rutherford as Gloria