Secret Service of the Air

Secret Service of the Air also known as Murder Plane is a 1939 American adventure film directed by Noel M. Smith and starring Ronald Reagan. This film was the first in Warner Bros. Secret Service series. The series consisted of four films, all starring Ronald Reagan as Lieutenant Brass Bancroft of the U.S. Secret Service and Eddie Foy, Jr. as his sidekick Gabby. The 1940 film Murder in the Air was the last in the series. Reagan was just starting out his film career and commented later that during that period, he was a B movie Errol Flynn.

The agents boss, Tom Saxby John Litel, needs a pilot to infiltrate the smuggling ring. He turns to commercial airline and former military pilot Brass Bancroft Ronald Reagan, who has applied to join the Secret Service.Arrested on a trumpedup charge of counterfeiting, Brass is locked in a cell with gang member Ace Hamrick Bernard Nedell. Brass learns that the smugglers use the Los Angeles Air Taxi Company, where he lands a job after Saxby has the regular pilot arrested. With his friend and radio operator, Gabby Watters Eddie Foy Jr., Brass convinces the ringleader, Jim Cameron James Stephenson, to let him take over the smuggling flights. He tricks Cameron into entering the United States to be captured by the border patrol. After an air battle, Brass turns the smugglers over to the authorities, and is greeted by his fiance, Pamela Schuyler Ila Rhodes. ........

Source: Wikipedia