Ken Williams is the husband of Claire Williams, a sufferer of Bellini's lymphocemia. Mr Williams was brought in for questioning after his wife was a second kidnap victim after Emily Kramer.
At first, he claims no knowledge of Emily but is confronted by Olivia and Peter after Olivia and Charlie find a picture of his family among Emily's possessions. His lie revealed, he explains how his wife has been going to Dr. Nadim Patel for illegal treatments along with Emily. ("The Cure")