Winter, 1843. A young woman is under investigation following the mysterious death of her family's matriarch. Her recollection of the events sheds new light on the ageless forces behind the tragedy.

Evelyn Salt is a CIA agent and highly respected by all, including her boss, Ted Winter. Out of the blue, a Russian spy walks into their offices and offers a vital piece of information: the President of Russia will be assassinated during his forthcoming visit to New York City to attend the funeral of the recently deceased U.S. Vice President. The name of the assassin: Evelyn Salt. Concerned about the safety of her husband, who she cannot contact, she goes on the run. Winter refuses to accept that...