Look for the secret exit of Leiden with this unique self-guided citygame. Decipher puzzles and riddles, complete assignments and take pictures to find the secret exit of Leiden within two hours. Dive into the story of Goeie Mie, a poisoner and serial killer. Will you help her find the secret exit of Leiden? Are you following the right directions and solving all the questions? With the help of our app you walk through Leiden, looking for the hidden exit. You can play an Escape Tour with a team of 2 to 4 people on your own smartphone. You will receive all instructions by e-mail in advance, so that means that there is no instructor needed on site. You can start the Escape Tour whenever you want! And will you find the exit within 2 hours? Then you have a chance to win a mention on the Wall of Fame!