Invisible Ink Pen Kit (International Spy Museum Series) Paperback – March 14, 2006

I bought this as a gift for someone and to my (and their) disappointment the pen was dry and barely wrote 5 words before it dried out completely, the booklet and cards are baby sized, and as for the light, well...what good is the light without the pen?My advice: pay six or seven dollars more if you want a pen that will work, because this one sure won't.

This thing doesn't work at all. I bought it for my 4-year old nephew for his birthday so we could write each other messages. He's into spy stuff. I tried to write him the first message on his birthday with this pen and it didn't work. Not just didn't work a little bit, but didn't work AT ALL. Waste of money. Waste of time.

My friends and I all bought this "Invisible Ink Pen Set." It came in a smaller box than expected and didn't have the quality product we were hoping for. It still worked quite well and served it's purpose. I guess that is what you get for five dollars!?!?

This pen barely works... and is much too small. Look for a better product.