If you thought Something's Gotta Give had a bit of a sick storyline, you won't want to rent If This Be Sin. If you like your romances with messy triangles that don't respect family boundaries, you might enjoy this naughty romp.
Myrna Loy is married to Roger Livesey, and when he has a collapse, the doctor orders him to take off work and rest in Capri for six months, lest he become permanently blind. Why he has to rent an oceanfront villa is beyond me, since he can't enjoy the view - but I guess that's beside the point. The real point comes when Myrna is reading his mail to him. He gets an anonymous letter informing him that his wife is having an affair with his best friend. Instead of pretending the letter was a bill, or instead of thinking quickly and making up false contents of the letter, Myrna actually reads it to her blind husband. Why would she do such a thing? He goes into a rage and believes the accusation, and Myrna once again, acts incredibly stupidly. She blurts out that the rumor has to be false because (are you ready?) his best friend is actually having an affair with his daughter. Is that the worst excuse you've ever heard?
I didn't enjoy this one, even though I usually like complex love triangles. I just couldn't get behind this one, probably because the mess could have been so easily avoided at the start of the movie. Feeling sorry for Myrna was tough, since she created the situation for herself. Hoping Peggy Cummins would end up with her father's friend wasn't really in her best interest, I felt. You can give this movie a try if you want to, but it's not high on my list.