A movie that seemed to prove its own mortality with a lackluster performance at the box office has found new life on TV.

"Shadowhunters," based on Cassandra Clare's Young Adult fantasy series "The Mortal Instruments," has gotten a 13-episode series order from ABC Family, according to The Hollywood Reporter.

"The Mortal Instruments: City of Bones," a film adaptation starring Lily Collins, hit theaters in August 2013, posting an opening weekend box office of only $9.3 million and netting only $31 million domestically during its theatrical run.

Casting is underway for the show, which THR says will begin production in May in Toronto for a yet-to-be-announced premiere date.

According to her Twitter, author Clare is in Los Angeles currently and has been present for some auditions.

ABC Family is touting "Shadowhunters" as a high-end drama.

“'Shadowhunters' is a big epic saga that will resonate with viewers who come to ABC Family for the 'Harry Potter,' 'Hunger Games' and 'Twilight' franchises,” ABC Family president Tom Ascheim told THR. “A New York Times best-seller for 122-consecutive weeks, with over 35 million copies in print worldwide, 'Shadowhunters' is the perfect story to share with our audience."

The network has been building an audience with hits like "Pretty Little Liars" and "The Fosters."

Clare's books, of which she has said there will be 18 in the saga, follow the adventures of Clary, a teen girl who lives half in the human world and half in the demon world.