Helen Granger is the mother of the murder victim Warren Granger. When Booth and Brennan get to Warren's house they are lead to his room by his parents. His mother leaves and his father says that he had thought that he had simply run away. Warren's parents later learn that his leukemia, which had been in remission since he was 11 had returned and he was dying. Booth tries to comfort them by claiming that Warren hid it from them so they wouldn't have to suffer with him which is why he'd pulled away from them.