Directed by Mino Guerrini, who wrote it with Fernando Di Leo based on “Tempo di massacro” by Franco Enna, this has an American detective, Vince Dreyser (George Ardisson), as its hero. He meets up with an old friend, Walter Dempsey (Hans von Borsody), who soon goes missing. This feels as much Eurospy as giallo, but Guerrini helped script what many consider the first film in the genre, Evil Eye. Bava’s influence is on this movie, thanks to handheld cameras and a long dummy drop that follows the body as it descends into the pavement.

Also known as Agent 3S3 setzt alles auf eine Karte (Agent 3S3 Bets it all on One Card),* Omicidio per appuntamento (Murder by Appointment) and Rendezvous met de dood (Rendezvous with the Dead), this has our hero get another job guarding the daughter of a rich man, Fidelia (Halina Zalewska, An Angel for Satan and the half-sister of Ely Galleani from Emanuelle In Bangkok), who ends up being a lot to deal with. She also has some baffling hairstyles in this, ones that would cause Princess Leia to say, “Really?” I love her.

While not a full giallo, this does have a wild club where everyone dresses up, drinks and races slot cars. Were slot cars a hot night out in Rome in 1966? 

*Ardisson played Walter Ross, Agent 3S3, in two movies: Massacre In the Sun and Passport to Hell.

You can watch this on Tubi.