Jake Diamond, Private Investigator Books in Order

A woman asks San Francisco investigator Jake Diamond to find her husband, who is accused of murdering Jake’s mentor. Determined to solve the killing, Jake follows unreliable leads between San Francisco and Los Angeles with help from his unconventional circle of friends.

Burglar Lefty Wright is caught in a house where police also discover a judge’s body. Hired to prove Lefty’s innocence, Jake Diamond investigates a kidnapping and an older homicide, but potential witnesses keep dying before he can question them.

A gunman forces Jake Diamond to Chicago, where a mob-connected lawyer demands that he locate two elusive people. Moving among Chicago, Los Angeles, and San Francisco, Jake must finish the assignment while avoiding a client ready to kill him once he becomes expendable.

After intruders murder his investigative partner Lenny Archer, Jimmy Pigeon sets out to identify the killers. Clues involving an old Charlie Chan actor and a decades-old mob assassination lead him into an uneasy alliance with an LAPD lieutenant.

When an assistant district attorney is murdered, detective Roxton Johnson suspects his own lieutenant and turns to Jake Diamond. The longtime antagonists must overcome their mutual distrust to investigate a case that may implicate someone inside the police department.

Jake Diamond’s friend Vinnie is shot, left at a crime scene, and accused of murdering an influential businessman. With authorities pressing for a quick conviction, Jake and his allies race to identify who betrayed Vinnie and prevent him from taking the blame.