One more thing. I consider it and columbo to be the two best who done its ever on TV. Ellery queen is too unlikely. Murder she wrote, matlock, etc... are merely replays of lucky chances. I think even sherlock holmes assumes too much. Columbo and monk both have clues they find by looking, and manage to fit them together. BTW both are "tv shows".
Columbo's hook is that he appears to be a recluse(although he was married, they never showed his wife, and they later created a series mrs columbo that didn't last long), dresses like a bum(old trenchcoat, etc...), and drives an old import junk car. He always seems to come back, and takes copious notes. The criminals always assume he is an idiot, until he solves the case.
Monk's hook is that he is afraid of almost everything, but fights it, goes around with a nurse, has a great eye for detail, a great memory, and is the epitome of a person with OCD. The criminals always assume he is an idiot, until he solves the case.
Steve