'Hostages' Sneak Peek: Ellen & Brian's Gun Hunt

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In tonight's episode of CBS' thriller Hostages, Brian and Ellen try to find a way out of their impossible predicament when Ellen suggests a creative way to get their hands on a gun, and ETonline has an exclusive sneak peek.
Also in the episode, Ellen's sister Laurie shows up unexpectedly, forcing her to try to get her sister to safety before Duncan can harm her, and Ellen is again questioned by the secret service -- but Duncan is there to question her as well.
Watch the clip to see Ellen's plan for getting a gun, and tune in to Hostages tonight on CBS at 10 p.m. ET/PT to find out if their scheme is successful.