Whether you're raising a young Sherlock Holmes or a future James Bond, your little investigator needs the high-tech help of an invisible pen and UV light to reveal evidence and complete secret missions. This pocket-sized pen is perfect for stealthy invisible message writing on the go. And the UV light illuminates other items that glow! Requires 1 AAA battery, not included.
From Thames & Kosmos, for ages 8+ yrs.