A Night in Terror Tower (Classic Goosebumps #12) - R. L. Stine

It's going to be a L-O-N-G night A chilling repackage of a best-selling Goosebumps--Now with bonus materials Sue and her brother, Eddie, are visiting London when they run into a little problem. They can't find their tour group. Still, there's no reason to panic. No way their tour guide would just leave them. All alone. In a gloomy old prison tower. No way they'd get locked inside. After dark. With those eerie sounds. And a strange dark figure who wants them...dead.