Boo Who?: And Other Wicked Halloween Knock-Knock Jokes (Lift-The-Flap Knock-Knock Book) - Softcover

Katy Hall has written all of the Life With Louie books for HarperEntertainment. She and Lisa Eisenberg have collaborated on many fun flap books, including Hearty Har Har; Gobble, Gobble, Giggle; Jingle Jokes; Easter Crack-ups; and Trick or Eeek! Ms. Hall lives in New York City.

Stephen Carpenter has illustrated many books, including Olive You!, Jingle Jokes, The Dreidel, Dreidel, Dreidel Board Book and the picture book The Three Billy Goats Gruff. He lives with his wife and son in Shawnee Mission, Kansas.

Katy Hall and Lisa Eisenberg have collaborated on many fun flap books, including Hearty Har Har; Gobble, Gobble, Giggle; Jingle Jokes; Easter Crack-ups; and Trick or Eeek! Ms. Hall lives in New York City and Ms. Eisenberg lives in Ithaca, NY.