L.A. detective Sgt. Castle and his two partners investigate the theft of a valuable Fragonard painting by a thief who pilots a helicopter.
| Actor | Role |
|---|---|
 Willard ParkerLt. Vern Tyler | Lt. Vern Tyler |
 Merry AndersMona Whitney | Mona Whitney |
 Robert DixSgt. Bob Castle | Sgt. Bob Castle |
 John HollandArthur Murcott | Arthur Murcott |
 Russ BenderSgt. Lou Kurnitz | Sgt. Lou Kurnitz |
 Douglass DumbrilleMillard Nolan | Millard Nolan |
 George EldredgeHowie Franklin | Howie Franklin |
 Ivan BonarOliver Dunning | Oliver Dunning |
| JJack YoungerPaper Boy | Paper Boy |