'Blacklist' Spinoff Starring Famke Janssen in the Works at NBC

Famke Janssen GETTY - H 2016
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NBC is looking to take The Blacklist to the next level.

The network is teaming with producers on the James Spader starrer for a potential spinoff, The Hollywood Reporter has learned.

Plot details are being kept under wraps but the potential spinoff would air May 12 as a back-door pilot and star Famke Janssen (X-Men, How to Get Away With Murder) as Susan "Scottie" Halsted. Her character will be introduced in episode 321 (airing May 5). Details about her character are also being kept close to the vest. Sources tell THR that the role could be the mother to Blacklist series regular Ryan Eggold's mysterious character.

Justified's Michael Dinner is on board to direct the Blacklist back-door pilot. Edi Gathegi (shown) has also closed a deal to co-star in NBC's The Blacklist spinoff as a series regular. The Twilight alum, who has been recurring on the flagship, would continue to play Matias Solomon — a Cabal operative sent to hunt down Spader's Reddington. The actor, who counts X-Men: First Class and Gone Baby Gone among his credits, is repped by ICM Partners and Framework Entertainment. Additional casting is expected to be announced soon; sources say other familiar faces from the flagship will board the potential spinoff.

The project hails from The Blacklist brain trusts Jon Bokenkamp (The Call), John Eisendrath (Alias), John Davis (Predator), John Fox and Michael Watkins (The X-Files), who will all serve as executive producers. Like The Blacklist, the potential spinoff would be produced by Sony Pictures Television and Davis Entertainment.

Should the spinoff move forward, it's unclear if it would be for the 2016-17 broadcast season. A decision is expected to come in the next few months.

In its third season, The Blacklist continues to be a major priority for NBC. The series ranks as the network's No. 2 drama — behind Blindspot, which took over Blacklist's prime post-Voice time slot — and the Spader vehicle averages a solid 3.0 rating among adults 18-49 and nearly 12 million total viewers when factoring in seven days of delayed viewing. The series has already scored an early season four renewal.

The news of a potential Blacklist spinoff comes as NBC is also prepping a fourth franchise in Dick Wolf's Chicago series, with Chicago Justice set to air as a back-door pilot this season in Chicago PD.

For NBC, the Blacklist spinoff brings to 22 the number of pilots the network has in the works (off one from a year ago) and eight dramas (also shy one).

For SPT, meanwhile, extending The Blacklist comes as little surprise. The studio has made a practice of making the most out of its hit franchises — and has found success with Breaking Bad prequel Better Call Saul at AMC.

Janssen is repped by ICM Partners and Brookside Artists.

March 29, 5:20 p.m.: This story has been updated to include additional casting.