On Easter Morning

On Easter Morning is the third book in the On Day/Night Miniseries. It stars Miles and Quinn a few days before Easter, and their parents just announced that they've been engaged for a few months, were dating for a few months, and are getting married on Easter (since both Miles's dad and Quinn's mom are dead). Both Miles and Quinn are overjoyed but embarrased, and inadvertently use Quinn's music box to make them invisible, then it hides itself again. Miles and Quinn must find the music box before their parents find they're invisible.