Charming Sinners was a stilted adaptation of Somerset Maugham's play The Constant Wife. Robert Miles (Clive Brook) starts the ball rolling when he falls in love with Anne-Marie Whitley (Mary Nolan), the best friend of his own wife Kathryn (Ruth Chatterton). In retaliation, Kathryn begins a flirtation with her former boyfriend Karl Kraley (William Powell). After reels and reels of verbal fencing, the status quo is re-established, and Robert and Kathryn are reunited.
Ruth Chatterton
as Kathryn Miles
Clive Brook
as Robert Miles
Mary Nolan
as Anne-Marie Whitley
William Powell
as Karl Kraley
Laura Hope Crews
as Mrs. Carr
Florence Eldridge
as Helen Carr
Montagu Love
as George Whitley
Juliette Crosby
as Margaret
Lorraine MacLean
as Alice
Claud Allister
as Gregson