While fans may have been sad to see Dan Stevens leave “Downton Abbey” this past season, the young British thesp continues to build up his busy slate as he will now star in the indie “The Guest.”

Adam Wingard will direct with Simon Barrett writing the script.

Described as a very dark turn for Stevens, the story follows a family who befriends a man who has just returned from a tour of duty unaware he is not the man he is letting on to be.

The pic will be produced by Keith Calder and Jessica Wu.

Production is set to start later this summer.

Since leaving the show at the end of season three, Stevens has stayed very busy jumping into filming the Wikileaks pic “The Fifth Estate” in February followed by “Summer in February” and most recently wrapping production on the Cross Creek pic “A Walk Among Tombstones.

He is repped by WME and Julian Belfrage Associates.