Watch out-Mums know everything! Milo's mum always knows what he's up to. She knows when he's using her saucepans to brew up magic spells, and she knows when he's bouncing on his bed. She even knows when he's wrestling with giant sea monsters in the bath-just how does she do it? There can only be one answer: she must have X-RAY VISION! Or does she? Milo decides to put her to the test to find out once and for all.