Heads, You Lose!

 Heads, You Lose! was the fifteenth Goosebumps HorrorLand book, and the third book in the Chiller House arc. It was preceded by Little Shop of Hamsters and followed by Weirdo Halloween.

Plot
Jessica Bowen and Ryan Chang bring home a two-headed "joke" coin from the HorrorLand souvenir shop. A simple coin toss transports them to a world of terror. They find themselves back in time, being chased by guards who accuse them of beheading the prince. Unless they can avenge him and reunite him with his head, their own heads will be on the chopping block!