Carnevil — J.H. Reynolds

In the third Monsterstreet book, a ticket to the scariest carnival in town comes with a price that might cost your life...

When Ren and his younger brother, Kip, are sent to spend Halloween with their aunt Winnie, who runs Old Manor Nursing Home, they're expecting a boring holiday. But then a strange autumn carnival rolls into town offering them spooky thrills and monstrous delights.

Kip, lured by the magic of the carnival, makes a bargain with the mysterious Tick-Tock Man for unlimited rides. Now Ren has until the end of Halloween night to save his brother or Kip will be trapped in the carnival -- forever!