A Golden Widow (1969)

A woman learns that she is her forgotten rich uncle 's sole legatee; but there is an embarrassing clause: she has to be a widow to come into the money or else the fortune will go to a vague sect . The problem is that she's married so she has to dispose of the husband. She's so clumsy that she always kills the wrong man. Then, fortunately, one of the dead bodies resembles her husband, and it could be the solution.