" When will I go home?” Patricia asked. “What, do you want to go home for your birthday?” Cinque sneered. Patricia would turn twenty on February 20. This was, perhaps, the most unnerving thing that Cinque had said to her. He knew her birthday. It underlined that this was no random attack. They had been researching her life, which was chilling. — "

― Jeffrey Toobin , American Heiress: The Wild Saga of the Kidnapping, Crimes and Trial of Patty Hearst