Readers can lift up the flap to see for themselves as Milly's friends reassure her that the scary monsters in her house are merely friendly animals dressed up or in odd places, until they look under a box in the basement.
Is there really a monster in Lucy''s house or is it all in her imagination? Young readers can help Lucy o pen doors, cupboards and drawers, look under beds and behind sofas to see if they can find a monster. '