Murder Weapon

Two mobster daughters leave a sanitarium, host a party inviting ex-boyfriends, who then start disappearing mysteriously. Two daughters of mobsters get out of the sanitarium after having killed a boyfriend in the shower, supposedly cured and on the right track. They hold a party and invite all their old boyfriends, making all of them think there is still hope for a relationship. Then the boyfriends start disappearing one by one.