Allan Heinberg, who served as showrunner on the network's 'The Catch,' will pen the script for the top-secret project.

ABC is looking to bolster its Marvel lineup.

The Disney-owned network has handed out a sizable production commitment to a top-secret drama featuring female superheroes from Wonder Woman writer Allan Heinberg.

In typical Marvel fashion, details about the premise are being kept under wraps, though it is expected to focus on lesser-known characters in the comic book giant's library.

Heinberg will pen the script and executive produce alongside Marvel TV head Jeph Loeb. The deal expands the scribe's relationship with ABC, where he served as showrunner for two seasons on the network's Shondaland drama The Catch.

ABC's Marvel lineup currently consists of Agents of SHIELD, which will return in 2019 for an abbreviated 13-episode order (it's unclear if this is the show's final season). The potential series hails from Marvel Television and ABC Studios, with Heinberg under an overall deal with the latter.

The news comes as finding another Marvel series has been a priority for ABC Entertainment president Channing Dungey. The exec told The Hollywood Reporter in August that the network was "cooking up a couple things for broadcast" with the comic book publisher and already had a project in the works with Loeb.

The news comes as ABC parent company Disney is readying its direct-to-consumer streaming service that will be the exclusive home to Marvel feature films and a slate of new scripted series spun off from the MCU's blockbuster characters.

Should Heinberg's drama move forward at ABC, it would join a Marvel scripted slate that also includes multiple Netflix series (Daredevil, Jessica Jones, The Punisher, Iron Fist, Luke Cage, The Defenders), Hulu's The Runaways, FX's Legion and Fox's The Gifted.

For Heinberg's part, his credits include a decade-plus-long run in Shondaland, where he worked on Grey's Anatomy and Scandal. The Marvel project brings him back into the company's fold after he created and wrote comics Young Avengers and Avengers: The Children's Crusade. Heinberg is repped by UTA and Ken Richman.

Deadline first reported the news.