Before Richard Diamond was a private detective he was a cop working out of the 5th precinct on homicide. Homicide means murder and there are a lot more murders committed in a big city than you think, more than make the headlines in the papers. But there's one kind of murder that will really tear a cop to pieces, and that's when a cop is killed in the line of duty...

At the end of the show Richard Diamond, (Dick Powell) sings I've Got A Lovely Bunch of Coconuts.