When thirteen-year-old Erin Dearlove has to move in with her aunt on Cape Town’s bustling Long Street, she struggles to adapt to her new life, harbouring a dark secret. But her friendship with their upstairs neighbour, Mr Devilskein, soon helps her to adjust. Like Erin, Mr Devilskein has something to hide: he is the keeper of six mysterious doors. He entrusts Erin with the key for one of these doors, and she discovers that they lead to infinite magical worlds. In wonder she explores an underwater paradise, the lost works of William Shakespeare, and a beautiful Chinese garden. During her adventures she meets a prisoner names Julius Monk, but Julius is not all he appears to be. The captive and his Book of Dooms prove dangerously enticing, and soon it is up to Erin to save the lives of those she’s grown to love.