Scooby Doo and the Mystery of the Haunted Library written by Matthew K Manning & Illustrated by Pedro Riquelme #ScoobyDoo #Scoob #ScoobyDooandtheMysteryoftheHauntedLibrary #ScoobyDoobyDoo #ScoobyDooWhereAreYou #ScoobyDooBook #MysteryInc #MysteryIncorporated #MysteryIncPictureBook #PictureBook