Derek (acclaimed Canadian actor Michael Riley) is so dedicated to the love he has for his family that he resorts to increasingly dangerous lengths to preserve it. After he and Allison separate -- she tells him it's temporary, but we soon know better -- the distraught dad lurks in places he shouldn't, watching his young son Will (Connor Widdows) leave school and spying on the house that once was his. The result -- and this is not a spoiler in any sense -- is Derek's abduction of his son.
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Swinton herself is an ex-boarding school pupil.