4M KidzLabs: Spy Science/Alarm This fun Spy Science fingerprint set can help your child search like a real detective. Who ate the last cookie, for example? You can find the culprit with this set! Using index cards, you can create your own database. You will learn how to find invisible fingerprints using special dust powder and how to identify their owners. The kit also includes a personal 'detective identity card'. All you have to do is stick on your photo and fill in your personal details and you can get started as a detective. The dimensions of the box are 17 by 22 by 6 cm. Suitable for children aged 8 and over. Set contains 10 index cards, stamp pad, magnifying glass, 20 fingerprint stickers, brush in a plastic box. With detailed instructions.