Feb. 20 -- Accused spy Robert Hanssen was arrested under dramatic circumstances on Sunday, but the FBI's investigation of him involved months of less glamorous legwork. Concluding a four-month ...

Robert Hanssen, 79, was found unresponsive in his cell at a federal prison in Florence, Colorado, and later pronounced dead, prison officials said.

WASHINGTON (AP) — Robert Hanssen, a former FBI agent who took more than $1.4 million in cash and diamonds to trade secrets with Moscow in one of the most notorious spying cases in American ...

April 6 -- Accused spy Robert Hanssen seems to have been a master of duplicity, but it appears that at least one of his roles was not an act — that of devout Christian.

Former FBI undercover operative O’Neill delivers an adrenaline-laced memoir of his clandestine efforts to bring down Robert Hanssen, FBI agent and double-agent Russian spy. His assignment: go ...