Tuck your children into bed and kiss them good night. Tiptoe out the door and turn off the light. Now they are all alone, but they cannot sleep. They hear scary noises and see creatures that creep. Boo, a rhyming picture book, tells what happens when children are afraid of the darkthings that are harmless during the day seem to come alive at night to terrify them. But with a parents help and reassurance, they discover everything is going to be okay.