In Some Days Are Murder, Harry, former literary agent turned private investigator, comes out of retirement to solve the murder of a former client. Now, six months later, a larger-than-life movie producer has asked Harry to look into a blackmail attempt: a young man the producer had a dalliance with was apparently not only young, but underage, and the underage young man is now threatening to go public if the producer doesn't pay him a large sum of money. Of course, all Harry wants is to be retired, go into the office and trade quips with his long-time secretary, Bernice, read Variety and The Hollywood Reporter while lunching at the Hamburger Hamlet, and listen to his beloved opera recordings. But the flamboyant producer, who is on the verge of making a film that has all the makings of a blockbuster, won't leave Harry alone until he agrees to look into the underage boy's past.
Of course, someone turns up dead and Harry, in a race against the clock, must deduce who the guilty party is from a colorful array of suspects. Set in Los Angeles during the Christmas season of 1975, the territory is a new one for Harry, from West Hollywood's The French Market Place to the Studio One Backlot. And somewhere in there lurks a murderer.