Has PBS found its next Downton Abbey? The net has officially cast its upcoming Civil War drama Mercy Street.

How I Met Your Mother star Josh Radnor and The Returned's Mary Elizabeth Winstead will lead the star-studded cast. The six-part series follows the lives of two volunteer nurses on opposing sides of the Civil War, New England abolitionist Mary Phinney (Winstead) and Confederate supporter Emma Green (newcomer Hanna James).

Radnor will play Jedediah Foster, a civilian contract surgeon from a Southern slave-owning background.

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Gary Cole, Donna Murphy, AnnaSophia Robb, Peter Gerety, Norbert Leo Butz and Jack Falahee also star.

Mercy Street will join PBS' Sunday night lineup in winter of 2016, which also includes the highly-anticipated final season of Downton Abbey.

What do you think? Will you tune in for the new drama?

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