Quel ficcanaso dell'Ispettore Lawrence (The Killer with a Thousand Eyes)

As you can probably tell from the poster art, Juan Bosch's Quel ficcanaso dell'Ispettore Lawrence is a poliziesco/giallo hybrid. Unfortunately it's not a particularly successful one. Anthony Steffen (who also co-wrote the script) stars as a special agent sent to Lisabon to solve the murder of one of his collegues. There are a handful of murder scenes that could appeal the giallo fans, but overall the film focuses far more on police procedure and the poorly staged fight scenes. Like the poster art though, but unfortunately I've got no info on the artist.