Prescription: Murder

This is a fascinating early outing for one of the greatest TV characters ever created. Filmed about three years before the great man was given a regular series, in an uncanny way it both stands alone and acts as a guide to what was to come.

The Columbo formula is in place: immediate suspicion leads to the hounding of the suspect until Columbo's psychological pressure is too much to bear and the victim is helplessly trapped.

I like to think that Columbo spent the years between 1968 and 1971 refining his methods, becoming subtler and more suggestive in his probing while letting his appearance become dowdier and even less threatening. Certainly this is one of the few occasions when he loses his temper on a case. Even when Columbo loses his temper, he is generally working to provoke a reaction.

There are some nice directorial touches here, too, particularly a cut based on the murderer's hands, a hand hitting a piano keyboard with a discordant 'plunk' (very Hitchcock) and Columbo's reflection materialising in a broken mirror.

After years of watching Columbo I am surprised anyone in Los Angeles even thinks about committing a murder. Surely the man is a legend in the local media? What do you mean: 'He's not real'?