On this day, April 28, in 1977, Christopher Boyce was convicted for selling secrets to the Russians in a case made into the movie "The Falcon and the Snowman," starring Timothy Hudson and Sean Pean.

Boyce's father, a ex-FBI agent, got him a job at a California company that operated America's spy satellites. Boyce and his childhood chum Andrew Lee started selling secrets to Soviet officials in Mexico City. Boyce, who was into falconry, was nicknamed The Falcon; Lee, a cocaine dealer, was The Snowman.

Lee was falsely arrested on suspicion of killing a Mexican police ofÞcer. Lee was carrying secret microÞlm, and rolled over on Boyce.

Boyce was sentenced to 40 years for the spying. He escaped from prison in 1980, carrying out a dozen robberies before he was captured. - Scott McCabe