An Irishman sets out to become famous as a singer on the radio. Due to a mix up he is instead entered as a contestant on a quiz show.
| Actor | Role |
|---|---|
 Jimmy O'DeaJimmy Houlihan | Jimmy Houlihan |
 Betty DriverBetty Pinbright | Betty Pinbright |
 Sonnie HaleFinch | Finch |
 Basil RadfordWatson | Watson |
 Patrick BarrJohn Blake | John Blake |
 Milton RosmerAlbert Pinbright | Albert Pinbright |
| LLena BrownPolly Pinbright | Polly Pinbright |
| HHenry HallettGrenville | Grenville |
 Garry MarshWalton | Walton |
 Franklyn BellamyAli Benali | Ali Benali |
| HHay PlumbStage Manager | Stage Manager |
| AAlf GoddardBattling Bulger | Battling Bulger |
 Raymond HuntleySinger in trio (uncredited) | Singer in trio (uncredited) |
 Barbara LottSophie the Telephonist (uncredited) | Sophie the Telephonist (uncredited) |