How many movies have Don Castle and Regis Toomey acted in together?

They have worked on 5 movies together! Their first movie together was Thunder Afloat (1939) while their highest rated movie together was Northwest Passage (1940). They have not worked together since I Wouldn't Be in Your Shoes (1948). They are most known for their mystery films together.

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Thomas J. 'Tom' Quinn
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Police Inspector Clint Judd
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Tim 'T.M.' Slade
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Inspector O'Haffey