The upcoming Swamp Thing TV show has cast Jennifer Beals for a key recurring role, as a local sheriff who's drawn into the tragic and mysterious events in the town of Marais. She's just the latest in a spate of key casting announcements for Swamp Thing, which is expected to debut on the DC Universe streaming service next year.

DC's Swamp Thing series is taking shape, with Len Wiseman confirmed to direct the pilot episode. Crystal Reed has been cast for the starring role of Abby Arcane, and it's rumored that Derek Mears will be playing the monstrous creature itself. Maria Stern was recently cast as Liz Tremayne, a childhood friend of Abby who dedicates herself to exposing the secrets that threaten her hometown.

Related: Swamp Thing TV Show Isn't in Same Universe as Titans & Doom Patrol

According to Deadline, Jennifer Beals will be joining Swamp Thing for another key role. Best known for playing Christina Hart in NBC's Taken and Margo in Amazon's The Last Tycoon, it seems Beals will be playing the local sheriff. Sheriff Lucilia Cable is described as "tough as nails and pragmatic," fiercely devoted both to her son and to the town of Marais. As the community she has dedicated her life to defending is beset by strange forces, Lucilia must battle to safeguard everyone she holds dear.

Swamp Thing is one of the most exciting projects in development for the DC Universe streaming service. A supernatural mystery, the series will see tragedy and danger stalk the rural town, and it's safe to assume the sheriff will be particularly important to investigating the dangers of Marais. Writer Gary Dauberman has confirmed that the series will draw richly upon Alan Moore’s seminal run, as he noted, "Fans of that series will know it gets pretty weird and extreme and scary. We really wanted to live up to that standard that Moore set up back in the ‘80s." The show is expected to be dark and violent, tilting strongly towards a hard-R rating.

The DC Universe streaming service launched on September 14 - better known to comic book fans as Batman Day. The service is currently only available in the United States, although DC editor and writer Dan DiDio recently confirmed that a Canadian version of the app is currently in beta testing. It remains to be seen how quickly Warner Bros. can roll the service out worldwide, given there's strong demand among comic book lovers for the promising range of original content that's in the works.

More: All the DC Movies and TV Shows Streaming on DC Universe

Source: Deadline