Sara Lambert, Natalie's sister-in-law, was played by actress Shelley Young in the Season One episode, "I Will Repay", the only one in which the character appeared. Sara's maiden name is not known. At the beginning of the episode, Natalie's brother Richard is shot. Sara comes to visit her husband in hospital, bringing with her their daughter, Amy. A short while later, she is informed that her husband has died. Sara is then hypnotized to forget everything that had happened since the funeral.