The film stars Sienna Miller, Diego Luna, Beth Grant, Aimee Carrero, Tory Kittles, and Vanessa Bayer.

Wander Darkly had its world premiere at the Sundance Film Festival on January 25, 2020, and was released in the United States on December 11, 2020, by Lionsgate.

She refuses to believe him, despairing over the end of her life, arguing over what-ifs and what happened and what could have been, while Matteo doggedly keeps her focused on loving him and living for him and their baby, Ellie.

Floundering over the painful truths of their limited time and lost opportunities, she attempts to jump over the building, unsure whether she is really dead or alive.

In August 2018, it was announced Sienna Miller and Diego Luna had joined the cast of the film, with Tara Miele directing from a screenplay she wrote.

The website's critics consensus reads: "Wander Darkly's risks don't always yield rewards, but strong work from Diego Luna and Sienna Miller helps this romance remain consistently alluring.