The Trap (1946 film)

Charlie Chan In the Trap is a 1946 crime film directed by Howard Bretherton. The main premise is two members of a show troupe are murdered, and Charlie Chan is called in to solve the case.

Calamity ensues at the beach villa in Malibu, California, where Cole Kings theatre ensemble resides, when one of the showgirls, Adelaide, is challenging Marcia, who is Coles girl and the star of the show.Marcia retaliates by threatening to reveal Adelaides secret marriage to a doctor by the name of George Brandt. She also steals a letter to Adelaide from said Brandt, using one of the other showgirls, Lois, who is hiding the fact that she is under eighteen. ........

Source: Wikipedia