Before Sundance even began, Amazon Studios had already grabbed “COMPLETE UNKNOWN,” a new Drama from Joshua Marston. In the film a mysterious woman with a remarkable past revisits a former lover, complicating the settled life he has built for himself and his wife.

The studio teases “Complete Unknown” stating that it is, “an unsettling exploration of identity” from acclaimed filmmaker Joshua Marston (Maria Full of Grace, The Forgiveness of Blood).

As Tom (Michael Shannon) celebrates his birthday with a group of close friends in Brooklyn, he is startled to see a woman from his distant past at the party. Jenny — or Alice (Rachel Weisz), as she now calls herself — first denies even knowing Tom, but as the evening progresses, she reveals a shocking secret. After disappearing from Tom’s life 20 years earlier, she began to reinvent herself every few years, taking on a new name, a new career and a new life each time. After giving Tom a glimpse of what life could be like if he lets go of the safety and security he has so carefully created, Alice asks him to make a choice that will change everything.

Directed by Joshua Marston from a script he co-wrote with Julian Sheppard (stage play “Buicks,” web series “Mayne Street”), Complete Unknown stars Michael Shannon (Revolutionary Road, “Boardwalk Empire”), Rachel Weisz (The Constant Gardener, Youth), Kathy Bates (Titanic, Misery), Danny Glover (Lethal Weapon, Beloved), Michael Chernus (Captain Phillips, The Bourne Legacy) and Azita Ghanizada (“Alphas,” Blood Shot).

Producers are Lucas Joaquin (Love is Strange, Beasts of the Southern Wild), Lars Knudsen (Ain’t Them Bodies Saints, Love is Strange) and Jay Van Hoy (Ain’t Them Bodies Saints, Frank & Lola). Director of photography is Christos Voudouris (Love is Strange, Before Midnight).

Production designer is Tommaso Ortino (Still Alice, The Forgiveness of Blood). Composers are Danny Bensi (Frank and Lola, Martha Marcy May Marlene) and Saunder Jurriaans (Frank & Lola, Martha Marcy May Marlene). Costume designer is Ciera Wells (Sleepwalk with Me, Damsels in Distress). Executive producers are Robert Halmi, Jr. (Frank & Lola, Goat) and Jim Reeve (Frank & Lola, Goat).