A secret about Gillian's past is uncovered on the episode "Sweet Sixteen." This clips gives us an idea of what that is.
Watch the full episode of Lie To Me's "Beat the Devil" which returned to FOX.
This is the official Fox promo for "Honey." Garrett Dillahunt guest stars on the episode.

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.