The Velvet Touch (1948)

While trying to break up with her producer/lover Gordon Dunning, Broadway star Valerie Stanton unintentionally kills him. In flashback, she recalls meeting new flame Michael Morrell, and Dunning's machinations leading to the fatal argument. The next day, it appears that Valerie's former rival Marian Webster is the prime suspect. Or is suave police Captain Danbury just playing cat-and-mouse with her? Nicely catty dialogue.