Welsh actor Matt Ryan may be best known as the lead character on NBC’s short-lived “Constantine”—a role he’s poised to reprise for the CW’s “Arrow”—but he’s currently starring on Broadway as the murderous Laurent opposite Keira Knightley, Gabriel Ebert, and Judith Light in Roundabout Theatre Company’s production of “Thérèse Raquin,” running through Jan. 3 at Studio 54. Warning: spoilers below!

Time to warm up at the lovely Studio 54.

To the special little boat in the corner, thank you for dunking me into gallons of water every single day. #extraclean

Say hello to Mr. Laurent. Costume design by Jane Greenwood.

It’s all part of the process, people. Comparing notes from both the original novel by Émile Zola and our script before the curtain rises.

Gabriel Ebert and I just moments before I slaughter him onstage.
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