The Helter Skelter Murders — William Harrington

The wife of a wealthy Los Angeles businessman is found murdered in her bed with her lover, with the words Helter Skelter painted in blood on the walls. Columbo, America's favorite TV detective, must ask himself whether the horror of the Manson himself is ordering a fresh new round of atrocities from his San Quentin prison cell?

To solve this case Columbo will have to face evil incarnate: the madman known simply as "Charlie."