"The Lucian Branch was shocked when Irina Spasky died in Indonesia on the hunt for the 39 Clues. Rumors are flying, but branch leader Isabel Kabra is desperate to hide the truth. She can't let her followers discover just how ruthless she really is. Irina used to have a similar philosophy, until her son died while she was on a Clue-hunting trip. She continued her work, but the loss haunted her. When Isabel tried to kill Amy and Dan by starting a fire, the memory of Nikolai pushed Irina to make the most un-Lucian move of all: She sacrificed her life to save the children."