Plot summary
While on vacation in Mexico with Emily, Lightman becomes involved in the case of a missing American woman, who is a single mother on vacation with her daughter. Upon investigation, Lightman learns that the mother got herself involved with an illegal fertility broker and the race is on to find her in time. Back home, Foster investigates D.C.-area hospitals with Lightman's rival, Jack Rader. They try to uncover the reason that five people have grown gravely ill after receiving blood transfusions.
Credits
Adapted from Wikipedia contributors, List of Lie to Me episodes. HTML formatting and reference markers removed.