Secret Marker Kit (Spy Museum Exclusive)
Got the "write" stuff to be a spy? Now you can send for-your-eyes-only messages to friends and other agents. Just write your message with the secret marker—it will be invisible until it's scribbled over with the special developer marker, revealing the message as if by magic! A Spy Museum Exclusive!
Pickup available at 700 L'Enfant Plaza Southwest
Usually ready in 24 hours