Secret-Invisible-Ink-Activity-Book

Inside this sensational activity book, little sleuths will find everything they need to graduate secret-training camp! Including creating a code name, writing coded messages, solving crimes through clues, finding hidden treasure and so much more. Best of all, secret elements are revealed throughout the book with the sensational UV-light pen, and agents can store their own secret messages with the special UV pen ink (revealing them when they want to with the torch end).

* Dual-ended pen: one end has a regular pen, and the other end has invisible ink that is revealed with the black-light torch within the pen lid.
* 96-page activity book