Simon Hannaford is in need of some fast money, and murder seems the obvious solution. Specifically, a 1930s Murder Mystery Weekend, to be held at Madingley Grange, his aunt's superbly hideous gothic mansion. Simon and his sister are meant to be housesitting, but surely Aunt Maude would not begrudge them the chance to earn a few nearly honest shekels. As the guests arrive-each one dottier than the last-Simon's grand plans quickly go awry. Meanwhile, the staff Simon hired on the cheap are busy hatching larcenous plans of their own. But when an actual body turns up, deprived of actual life, Simon's charade of detection is suddenly forced to begin in earnest.