"Lost" alum Maggie Grace, better known in recent years for her role in the "Taken" franchise, will star in the CBS medical pilot "Code Black," Deadline reports. She joins previously cast Marcia Gay Harden and Melanie Kannakoda.

Written by Michael Seitzman ("Empire State") and directed by David Semel, it's based on Ryan McGarry's 2014 documentary of the same name, which views the problems of America's healthcare system through the perspective of emergency room staffs.

The drama will center on four residents getting their first taste of ER medicine, and the medical staff that mentors them. Grace will play Leanne, the residency director who's described as "a force of nature."Watch the trailer for the "Code Black" documentary below.