Oliver Gettell
March 31, 2017 AT 12:00 PM EDT

Rosario Dawson has a dreamy new fiancé and an adorable new stepdaughter in the upcoming thriller Unforgettable, but unfortunately those blessings also come with an obsessive new nemesis.

EW has an exclusive look at the film’s latest trailer, which ratchets up the rivalry between Dawson’s Julia and Katherine Heigl’s Tessa, the scorned ex-wife of Julia’s husband-to-be (played by Geoff Stults).

Things begin amicably enough, with Tessa welcoming Julia to the neighborhood with a gift basket, but her mask slips as she drives away. As Tessa begins waging psychological warfare against Julia — questioning her parenting skills, sabotaging her relationship — the women seem destined for a showdown.

“Are you threatening me?” Tessa asks.

“Yes,” Julia fires back.

Watch the new trailer above for a taste of what happens next. Unforgettable opens April 21.

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