In the new psychological thriller UNFORGETTABLE Rosario Dawson plays Julia, a woman that moves to California to start a new life with his fiancé. The only problem is his ex-wife, Tessa, a possessive ice queen brought to life by Katherine Heigl.

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The film, directed by Denise Di Novi, also stars Geoff Stults, Cheryl Ladd, and Whitney Cummings.

UNFORGETTABLE will be released in theaters on April 21.

Tessa Connover (Heigl) is barely coping with the end of her marriage when her ex-husband, David (Stults), becomes happily engaged to Julia Banks (Dawson)—not only bringing Julia into the home they once shared but also into the life of their daughter, Lily. Trying to settle into her new life, Julia believes she has finally met the man of her dreams, the man who can help her put her own troubled past behind her. But Tessa’s jealousy soon takes a pathological turn until she will stop at nothing to turn Julia’s dream into her ultimate nightmare.