'Downton Abbey' star Dan Stevens lands X-Men show 'Legion'

X-Men show titled Legion is officially in works starring Dan Stevens as Charles Xavier's son. The series also stars Aubrey Plaza and Jean Smart, reported Entertainment Weekly.

The story revolves around David Haller who was diagnosed as schizophrenic, and struggled with perceived mental illness for years.

The drama is from Fargo creator Noah Hawley.

"Marvel Television is thrilled to not only have our first partnership with FX go to series, but working with the enormously talented Noah Hawley makes it even better. From the first time we heard Noah's vision to his exceptional script and cast through the extraordinary filming of the pilot, we knew the series would be incredible," executive producer Jeph Loeb.

Legion begins shooting this summer and will air in early 2017.