London in the early 1960s. Mark Easterbrook has everything a man could dream of, he's rich, successful and popular, with a beautiful wife and perfect home. But scratch beneath the surface and he's still grief stricken by the loss of his first wife Delphine. When Mark's name is discovered on a list in a dead woman's shoe everything starts to fall apart for him.

Mark is consumed with paranoia, fearful that his life is at risk and that the perpetrator is someone known to him. To make matters worse, Detective Inspector Lejeune seems increasingly suspicious of him. Mark determines to find a rational explanation for what has happened, which seems to lie in the ties between his first wife Delphine and the trio of `witches' at Much Deeping.