When his father dies, Carl Martin inherits a house in an increasingly rich and trendy London neighborhood. Carl needs cash, so he rents the upstairs room and kitchen to the first person he interviews: Dermot McKinnon. That was colossal mistake number one. Mistake number two was keeping his father’s bizarre collection of homeopathic “cures” that he found in the medicine cabinet, including a stash of controversial diet pills. Mistake number three was selling 50 of those diet pills to a friend, who is then found dead.