Set in London in 1946, shortly after World War II, two women, old friends whose paths diverged, reunite by chance. Antonia is wealthy and Rose is not but find common ground in their contempt for their husbands. Antonia comes up with a plan to kill each others husband and quickly proceeds with her end of the deal. Rose is reluctant to do her part when she finds Antonia's husband is a nice person who's only crime is that he refused to allow Antonia a divorce to run off with her lover. Not to be undone, Antonia moves ahead with her plans to kill him anyway and that's when things get complicated as the body count rises in this dark comedy.