"Irina Spasky is a Clue-hunting machine. She's a member of the Lucian branch, she has KGB spy training, and she's connected to all the most devious espionage networks around the world. When Irina Spasky gets into a tough spot, one flick of her fingers releases ten wicked needles loaded with poison. Your only chance to beat Irina in the hunt for the 39 Clues? Make sure you see HER before she sees YOU."