Peek-A-Boooo! : Here is a Halloween book in the same large-flap format as the highly successful Peek-a-Moo! and Peek-a-Zoo! Toddlers will enjoy playing peeka-boo with familiar, friendly, not-at-all frightening Halloween figures. Guess who? Peek-a-hee-hee-hee-heee!, cackles the witch. Guess who? Peek-aclack- clackety-clack! rattles the skeleton. Especially geared for the youngest trick-or-treaters, Peek-a-Boooo! is the perfect introduction to Halloween.