After a novel is turned into a West End musical, one of its stars becomes the victim to a real-life impossible crime. Juno Pirelli is discovered stabbed inside a locked dressing room, from which nobody could have gotten out of.
Jonathan and Polly find settling down hard as events around them turn more and more bizarre. A sex scandal erupts at the launch of the new community centre. A hump backed beast is seen running around gardens. Polly keeps having a recurring nightmare and a deadly plant is growing at the Creek residence.
A wealthy kidnap victim seems to pull off a stunning act of teleportation to alert the police to her whereabouts. As things between Jonathan and Polly couldn't be any better, the first signs of conjugal friction start to appear.