When a conniving female singer turns up dead, with the evidence pointing to the band’s drummer, jazz trumpeter Danny Brooks attempts to clear him—only to implicate himself and the rest of the band in the process. Can a jazz-loving police detective and Danny’s fiancée solve the case before the next downbeat?
| Actor | Role |
|---|---|
 Noah Beery Jr.Danny Brooks | Danny Brooks |
 Lois CollierJean Walker | Jean Walker |
 John LitelRoger Quinn | Roger Quinn |
 Steven GerayVic Miller | Vic Miller |
 Claudia DrakeAnita Lane | Anita Lane |
 Danny MortonJohnny | Johnny |
 Jimmie DoddChuck | Chuck |
 Steve BrodieHillary | Hillary |
 John KelloggKeys | Keys |
 Arthur SpaceDetective Carlyle | Detective Carlyle |
| JJosh WhiteJosh White | Josh White |
 Coleman HawkinsColeman Hawkins | Coleman Hawkins |
| OOscar PettifordOscar Pettiford | Oscar Pettiford |