As for the murderer, he's your classic giallo killer. He's: 1) a sex maniac of sorts, but equally obsessed with revenge, 2) a fan of black gloves and an all-black wardrobe, and 3) a relatively nondescript individual when he's not slicing and dicing. Like Lucio Fulci's own 1972 giallo, Don't Torture a Duckling, the villain in What Have You Done to Solange? masquerades as a priest in order to earn the trust and confidence of his victims. Similarly, Dallamano's killer is motivated by something that would've triggered most giallo killers: a forced abortion on a loved one. If you want sleaze, you got it, folks.
What Have You Done to Solange? is a beautiful film pockmarked with horrendous dialogue. It is also a spellbinding mystery that fizzles out with an foreseeable reveal and resolution. While the acting never manages to rise above B-grade, Dallamano's film still manages to be worthwhile watching. Call it so bad that it's good, but the truth is that What Have You Done to Solange? is a reminder why '70s cinema is still so good. You couldn't make this film today (the sheer amount of bush alone would tank it in 2016), and that's okay. We'll always have Italy.