Inspan is dedicated to tough pioneers, who along dangerous roads - with courage and strength - developed the vital transport routes for a young and growing country - the transport riders.
After being framed for a murder he didn't commit, Tom Penney (Donald Houston) serves his time and returns to his rural English home to establish a quiet life.
A jeweller is killed in a gang robbery leaving the daughter as the only witness. When the police can't build a case against him she decides to go undercover to infiltrate the home of the killer's brother.
A comedy of manners, the film centers on virtuous actress Patty O'Neill, who meets playboy architect Donald Gresham on the observation deck of the Empire State Building and accepts his invitation to join him for drinks and dinner in his apartment.