All threads in the story trace back to this Tampa, Fla., socialite. A surgeon's wife and mother of three children, Kelley is a sort of self-appointed social ambassador for the nearby U.S. Central Command and other officers at MacDill Air Force Base. The Kelleys opened their bayside home to lavish parties where military brass mingled with Tampa's elite. In this role, she befriended Petraeus and his wife, Holly, when he took over Central Command in October 2008. Kelley, 37, stayed in close contact with Petraeus after he left to take command of the Afghanistan war. They exchanged nearly daily emails in an account routinely monitored by his aides, according to two former staffers, who said those messages weren't romantic in tone. In May, Kelley started getting anonymous, harassing emails warning her away from Petraeus. She reported the email to the FBI. The FBI traced the messages to Broadwell, uncovering her affair with Petraeus. The FBI notified Petraeus' boss, Director of National Intelligence James Clapper, who urged him to resign. And the FBI found something more. It unearthed "inappropriate communications" between Kelley and another top military officer, John Allen, according to Pentagon officials.