Ten Dark Women (1961)

Kaze is a married TV producer and a shameless philanderer, having nine mistresses all at the same time. All his women have had enough of his indecisiveness and inability to commit, and meet together with a conspiracy to kill him. However, each woman secretly intends to save Kaze, thus ensuring she becomes the only woman in his life. Needless to say, when the time comes for the actual murder, things get unexpectedly complicated.