Third of four "Secret Service" films from Warner Bros. released from 1939-40 with Ronald Reagan playing Treasury Agent (aka T-Man) Brass Bancroft. The other three films are Secret Service of the Air (1939), Code of the Secret Service (1939), and Murder in the Air (1940).
Jim Pierce is in studio records/casting call lists in the role of Counterman, but he did not appear in the movie.
This film's earliest documented telecast took place in Tucson Friday 5 October 1956 on KDWI (Channel 9); it first aired in San Francisco Monday 31 December 1956 on KRON (Channel 4), in Scranton PA Sunday 3 February 1957 on WARM (Channel 16), in Portland OR Wednesday 20 March 1957 on KLOR (Channel 12), in Phoenix Wednesday 27 March 1957 on KPHO (Channel 5), and in Chicago Sunday 30 June 1957 on WGN (Channel 9).