Kernan Cripps was recruited from the Broadway stage to play Trask in the early talkie melodrama Alibi (1929). This proved to be Cripps' most extensive screen role; thereafter, he was consigned to bits and minor roles, usually as muscle-bound cops, bodyguards and bartenders. Looking quite comfortable in uniform, he essayed such roles as the umpire in the baseball comedy Ladies Day (1943) and the train conductor in the noir classic Double Indemnity (1944). Kernan Cripps also proved to be a handy man to have around in such action-packed fare as the Republic serial Federal Operator 99.