Mr. Howell, The Chief & Paul Drake
I only stopped to realize this movie would have three actors who would make it big on T.V. several years later. Jim Bacuks (Gilligan's Island), Edward Platt (Get Smart) and William Hopper (Perry Mason).
You also have Nick Adams who starred in "The Rebel". The only other actor I can think of who made a name for himself on T.V. was Corey Allen, but behind the camera as director of "Star Trek: The Next Generation".