Luciano Ercoli’s The Forbidden Photos of a Lady Above Suspicion (1970) is a kind of giallo although to be more accurate it's a giallo-esque suspense crime thriller.
Well-crafted, looks good and by giallo standards the plot makes perfect sense and the solution is clearly explained. Entertaining but lacks the stylistic flourishes I look for in a giallo.
My review: https://princeplanetmovies.blogspot.com/2021/06/the-forbidden-photos-of-lady-above.html