Thames & Kosmos Spy Labs Invisible Ink Pen and UV Light toy fair Simply select your favourite foil

Simply select your favourite foil roll

Beautifully bound in a padded hardback

2 Hero Cars

8 cm (assembled)Box dimensions: Approx

Thames & Kosmos Spy Labs Invisible Ink Pen and UV Light toy fair Simply select your favourite foilSpy Labs Invisible Ink Pen and UV Light gives you all the right tools when you are on the hunt for evidence or reading secret messages. Ultraviolet light helps you uncover many hidden clues. Exchange top secret info with your friends and fellow agents using this high tech device. The pen uses a special ink that only becomes visible under ultraviolet light, like the one emitted by the flashlight on its opposite end. You can also use the UV light to