L.A. detective Sgt. Castle and his two partners investigate the theft of a valuable Fragonard painting by a thief who pilots a helicopter.L.A. detective Sgt. Castle and his two partners investigate the theft of a valuable Fragonard painting by a thief who pilots a helicopter.L.A. detective Sgt. Castle and his two partners investigate the theft of a valuable Fragonard painting by a thief who pilots a helicopter.