Lightman enters the world of social networking on "Killer App." A website executive turns up dead.
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Tim Roth anchors Lie to Me in the role of Cal Lightman. He's an especially unique TV character.
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Lightman has questions for a paramedic in "Saved." She was first on the scene of a fatal, mysterious car accident.
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Victoria Pratt is seen here on Lie to Me. She plays a rich woman who hires Lightman and his team.
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Yup, Lightman is seen here inside a mental hospital. He checks in on "Funhouse" in order to pursue a case.
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Lightman is hired by a terminally ill patient on the episode "Smoked." He starts to think the man's sons are involved in a murder.
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That's guest star Annette O'Toole on Lie to Me. She plays a woman that needs Lightman's help and has early-onset Alzheimers.
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Lightman takes the leader of a self-help group to task on the episode "Beyond Belief." The latter is played by David Sutcliffe.
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Lie to Me Quotes

Here's the problem, Martin Walker is a psychopath and probably a killer. Just though you should know.

Cal Lightman

Martin Walker: A good chess player thinks five moves ahead.
Cal Lightman: Great chess players only think one move ahead, but it's always the right move.