Moomin plays peekaboo with Little My, Snorkmaiden, Moominmamma and Moominpappa in a rhyming lift-the-flap romp. But who is that hiding behind the very last flap? Look in the mirror, little one - it's you!Moomin plays peekaboo with Little My, Snorkmaiden, Moominmamma and Moominpappa in a rhyming lift-the-flap romp. But who is that hiding behind the very last flap? Look in the mirror, little one - it's you!