CASTLE Season 6 Episode 4 Number One Fan Promo : “Number One Fan” – A desperate young murder suspect, Emma Briggs, (guest star Alicia Lagano, “The Client List,”) takes hostages at gunpoint then mysteriously insists that she will only negotiate with one person: Richard Castle, on “Castle,” MONDAY, OCTOBER 14 (10:01-11:00 p.m., ET) on the ABC Television Network. Billy Miller (“The Young and the Restless”) also guest stars as Mickey Gerhardt, a hot headed Wall Street banker who gets caught in the hostage situation.
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