The film stars Irene Rich, Henry O'Neill, Jackie Moran, Aldrich Bowker, Jean Sharon, John Ridgely and Peggy Stewart.

[1][2][3] Tom Leslie is having some trouble at his newspaper job, so his wife, a stamp collector, suggests he distract himself with a former hobby of his own, photography.

Tom takes his son Robert to a national park, where the boy, a short-wave radio enthusiast, enjoys his hobby, too.

A park ranger informs the Leslies that a pyromaniac is on the loose and to be careful.

Robert's radio enables them to send for life-saving help, while a story from a photo Tom takes of the fire of Pine Ridge ends up capturing the pyromaniac in the same frame.