What's Under My Bed? by James Stevenson

A grandfather tucks his two grandchildren into bed after he has told them a scary story.  The children try to sleep but all the night noises cause them to scamper to their grandfather for comfort.  He, in turn, tells them a story about when he was young and scared at his grandparents' house.
Strategy: monitoring/check for understanding-two plots in one book to keep straight
-Borrowed from the library.
Warning: Lots of scary creatures-ghosts, ghouls, goblins, witches, monsters, skeletons