Charade
I love love loved this. The twists and turns I did not even see coming and I am normally a person that guesses these kind of things right quite early. Also the chemistry and the banter between Cary Grant and Audrey Hepburn was amazing. Reminded me of 'Gilmore Girls'. The costumes were stunning too. I mean, it was the 60s, what did I expect?!
Only critique I have is that the romance was a little rushed and that Regina always trusted him again was a little unrealistic.