The second season featured numerous guest stars. Michael Emerson portrayed a man calling himself Henry Gale, who is suspected to be one of the Others, a group of mysterious island inhabitants who terrorize the survivors. L. Scott Caldwell returned to play Rose Henderson, while Sam Anderson joined the cast playing her husband, Bernard Nadler. Kimberley Joseph returns as flight attendant Cindy, having appeared in the pilot episode. Henry Ian Cusick portrayed Desmond Hume, a man who had been living in the hatch for three years. M. C. Gainey played the Other named Tom and Tania Raymonde played the Other named Alex. John Terry appeared in numerous flashbacks as Jack's father, Christian Shephard. François Chau appeared in orientation films for the Dharma Initiative. Clancy Brown acted as Desmond's companion in the hatch, Kelvin Inman. Katey Sagal appeared throughout the season as Helen, Locke's love interest who gets caught between his pugnacious relationship with his father.