she appears to have a strong desire to take her soul to heaven or hell. Lincoln comes to believe that Dana may be looking for a way to have her soul "stow away" with that of another to join her family in the afterlife, and used the suicide hotline position to find those who are close to committing suicide. Another man is found dead by a self-inflicted bullet wound, though Dana was seen leaving his apartment. Evidence in his apartment points to the construction of a bomb, and the Fringe team suspects that Dana knows its location and may be hoping to exploit an event which will kill several people simultaneously in order to increase her own chances of death. Peter calls her, using caller ID spoofing to disguise his number as that of her late husband, and the signal allows authorities to pinpoint her location to a commuter train. The train is stopped and searched, while Dana leaves on her own with the bomb, moving it far enough away from the train. The bomb soon explodes, and when Peter and Lincoln search, they find Dana's body nearby, finally dead, and the only fatality from the explosion. Peter returns home where Walter has invited Bell to stay the evening. Bell explains that he believes that Dana was finally able to die after serving a purpose—saving the lives of the people on the train. When church bells go off nearby, Olivia's personality slips through momentarily. Bell regains control, but expresses new-found fear that his possession of Olivia's body has become more complicated than he thought. Production The episode's teleplay was written by Danielle Dispaltro, while the story was contributed by consulting producer Akiva Goldsman and co-showrunners Jeff Pinkner and J.H. Wyman. Supernatural veteran Charles Beeson directed. The episode was shot in early February 2011. Despite previous guest actor Leonard Nimoy's recent retirement, the writers still had plot lines concerning his character William Bell. Some months prior to the airing of "Stowaway", Nimoy and others had noted that Bell's character would return to Fringe. Anna Torv, who portrays Olivia, was not aware that her character would be channeling Bell until just prior to filming of the episode, and stated of the role, "This is not one I had been asking for!" To prepare, Torv sought advice from her fellow star John Noble, as both as a friend and because Noble's character, Walter,