Photos: Who's who in the Petraeus scandal

Updated 9:33 AM ET, Tue November 20, 2012
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Gen. David Petraeus, 60, resigned Friday, November 9, as head of the CIA and admitted having an affair. His mistress was later identified as his biographer, Paula Broadwell. The retired four-star general formerly oversaw coalition forces in Iraq as well as U.S. and NATO forces in Afghanistan. He and his wife, Holly, have been married 38 years and have two grown children. AFP/Getty Images
Paula Broadwell, 40, is a West Point graduate raising two children with her husband Scott in Charlotte, North Carolina. Her affair with CIA Director David Petraeus led to his resignation. She got to know him while working on a Ph.D. dissertation about him. Alleged "jealous" e-mails she wrote anonymously to another woman, Jill Kelley, brought the affair to light, a government source told CNN. HO/AFP/Getty Images/File
Jill Kelley, 37, allegedly received "jealous" e-mails from Paula Broadwell, which the FBI investigated, a government source told CNN. The probe brought the affair between Broadwell and CIA Director David Petraeus to light. Kelley and her husband, Scott, who live in Tampa, say they've been friends with the Petraeus family for more than five years. Kelley, an unpaid liaison at MacDill Air Force Base, is known in Washington's social circuit. REUTERS /BRIAN BLANCO /LANDOV
Gen. John Allen, 58, U.S. commander in Afghanistan, is under investigation for allegedly sending inappropriate messages to Jill Kelley. He denies wrongdoing, according to a senior defense official. Kelley had complained about anonymous e-mails she received, which were found to be from Paula Broadwell. The FBI probe of those e-mails led to the discovery of Broadwell's affair with CIA Director David Petraeus. MASSOUD HOSSAINI/AFP/Getty Images
Holly Petraeus, 60, has been married for 38 years to retired Gen. David Petraeus, and has two children with him. In the wake of his admitted affair with 40-year-old Paula Broadwell, she has become the latest scorned wife caught up in a public scandal. Holly Petraeus has long carved out her own mission helping others, with a special focus on financial issues facing military families. Alex Wong/Getty Images
Also in the mix is an FBI agent whom Jill Kelley approached about anonymous e-mails she had received. Frederick Humphries had previously sent shirtless photos of himself to Kelley, a U.S. official told CNN. Humphries passed on the information to others to investigate, the source said. The e-mails were determined to be from Paula Broadwell. KOMO/CNN