i had the ridiculous urge to shove the box behind my back , but it was too late . my mother looked over my shoulder and nodded her head at someone . 'you might want to give those tiles a wee clean before you continue , ' she says . '' i 'd been in such a hurry , i 'd missed it . tony sighed and got ready to speak . `` i was right : you 're an alien . the old saying the enemy to your enemy is your friend suddenly made a lot of sense . 