Moving On

S2, E9: Jack and his squad search for a driven neurosurgeon, Dr. Lianna Sardo (Lisa Edelstein), who disappeared after a nighttime jog in the city with her ex-husband, Dr. Evan Mayhew (Eric Lutes - "Caroline in the City"). For a month prior to her disappearance, Lianna seemed to be under an unusual amount of stress, according to Evan. In addition to Evan, the suspects include Lianna's violent ex-boyfriend and a doctor whom she was going to testify against in a malpractice lawsuit. The case becomes clearer when information reveals that Lianna tried to contact the child she had given up as an unwed teenager--and that an imposter may be posing as her daughter.