The Runaround (1946)

Maverick private eyes Kildane and Quayle leave a large agency to work on their own. Their first assignment (pirated from the old firm): retrieve eloping heiress Penelope Hampton...in competition with their former boss Prentiss. Kildane finds Penelope with surprising ease and keeps her one jump ahead of Prentiss with assorted difficulties, but can he avoid a romantic complication with his lovely charge?