The title character is office-boy Barney. Pretending to be a deaf-mute, Barney tries to trump his detective boss Walter Babbing by tracking down the person who kidnapped Peggy Meredith, the daughter of wealthy Agnes and Trumbull Meredith.
Ruth Chatterton
as Agnes Meredith
Fredric March
as Trumbull Meredith
John Cromwell
as Walter Babbing
Fred Kohler
as Joe Cooper
Mickey Bennett
as Barney Cook
Vondell Darr
as Peggy Meredith
Jack Oakie
as Dopey Hart
Zasu Pitts
as Rose Gleason
Richard Tucker
as Blackie Baker
Eugene Pallette
as Madison
