A busload of passengers, including off-duty police detective Dave Evans, is gunned down and killed. Evans, on his own time, has been following a man named Gus Niles in search of information linking businessman Henry Camarero to the murder of Henry's wife Teresa two years earlier.
Evans was the partner of Detective Sergeant Jake Martin, a veteran but cynical member of the Homicide Detail who is working the bus massacre investigation. Jake originally investigated the Teresa Camarero case and has been obsessed with his failure to "make" Camarero for the murder. Jake returns to it after many dead-end leads (including a disastrous confrontation with a deranged amputee who takes hostages at gunpoint) in the bus investigation. Niles was killed on the bus as well, and it was Niles who provided the alibi that enabled Camarero to cover up his wife's murder.
The sullen Jake and enthusiastic but impulsive Inspector Leo Larsen are paired to interview suspects. Jake shuts out Larsen from his deductions, while Larsen, despite a loose-on-the-rules and brutal side, tries to understand and gain the confidence of his new partner. Defying the orders of their police superior Lieutenant Steiner, they seek, find and smoke out Camarero, leading to a chase through the streets of San Francisco and a confrontation aboard another bus.
The Laughing Policeman is an awfully good police movie: taut, off-key, filled with laconic performances. It provides the special delight we get from gradually unraveling a complicated case... The direction is by Stuart Rosenberg, and marks a comeback of sorts... With The Laughing Policeman, he takes a labyrinthine plot and leads us through it at a gallop; he respects our intelligence and doesn't bother to throw in a lot of scenes where everything is explained. All the pieces in the puzzle do fit together, you realize after the movie is over, and part of the fun is assembling them yourself. And there are a couple of scenes that are really stunning, like the bus shooting, and an emergency room operation, and scenes where the partners try to shake up street people to get a lead out of them. Police movies so often depend on sheer escapist action that it's fun to find a good one.[4]
Variety praised the film, saying, "After an extremely overdone prolog of violent mass murder on a bus, The Laughing Policeman becomes a handsomely made manhunt actioner, starring Walter Matthau and Bruce Dern in excellent performances as two San Francisco detectives."[5]
According to Chris Petit of Time Out, "By the end, complete with car chase and split-second shooting, the film has become indistinguishable from all those movies it's trying so hard to disown."[6]
Matthew Hartman of High-Def Digest wrote that "[the film] could have been a great and gritty 70s thriller, unfortunately, it's [sic] primary story doesn't live up to the potential of the opening scene".[7]
^Solomon, Aubrey. Twentieth Century Fox: A Corporate and Financial History (The Scarecrow Filmmakers Series). Lanham, Maryland: Scarecrow Press, 1989. ISBN978-0-8108-4244-1. p. 257.
^Solomon p. 232. Please note figures are rentals, not total gross.