Scholastic, New York, 1995, reprint.  ISBN 0-590-48351-X.  Soft cover, 129+ pages.  Wraps show edge and cover wear, small corner bends, light creases and reading creases; binding tight.  Interior clean and unmarked with tanned/browning pages.  ‘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.’ (from rear wrap)