Keira Knightley has seen another milestone in her acting career by appearing on Broadway for the very first time in the stage adaptation of Emile Zola's 19th century story 'Thérèse Raquin'. Once again, she is in period dress covering familiar ground on unfamiliar soil.

Keira Knightley, Gabriel Ebert, Judith Light, Matt Ryan and David Patrick KellyThe cast of 'Thérèse Raquin' [L-R] Gabriel Ebert, Judith Light, Keira Knightley, Matt Ryan and David Patrick Kelly

Knightley appeared for her official Broadway debut at Studio 54 yesterday (October 29th 2015), playing the titular character in this romantic, vengeful thriller. This most recent adaptation of 'Thérèse Raquin' has been directed by Evan Cabnet, and stars - alongside Knightley - Gabriel Ebert, Judith Light, Matt Ryan and David Patrick Kelly.

The play follows the life of Thérèse, who is unhappily married to her cousin Camille. Soon, she embarks on an affair with her husband's friend Laurent LeClaire and plan to seal their relationship officially by getting rid of Camille. Unfortunately, their idyllic dreams and assumptions about the future lead to tragedies unforeseen, and all under the watchful eye of Thérèse's Aunt.

More: Keira Knightley had a shaky start with 'Thérèse Raquin' previews

Keira Knightley is well known for starring in historical dramas, and particularly classic stories that have been adapted to film. Take, for example, 'Pride & Prejudice', 'The Duchess', 'Anna Karenina' and 'Atonement'. This Broadway show is not her first foray into theatre either; her previous West End appearances include 2009's 'The Misanthrope' for which she was nominated for a Laurence Olivier Award, and 2011's 'The Children's Hour'.

Judith Light and Keira KnightleyKeira Knightley returns to the period format

2015 has brought a wealth of new experiences to Knightley. She welcomed her first child, daughter Edie, into the world in May alongside husband James Righton; plus, this is the first year she has been nominated for an Academy Award, a BAFTA and a Golden Globe all at once, following her appearance in 'The Imitation Game' - which also won her her first Screen Actors Guild Award.

Despite being particularly busy with parenthood and Broadway rehearsals, she's still managed to squeeze a film into her hectic schedule. She appeared in disaster movie 'Everest' alongside Jason Clarke, Josh Brolin and Jake Gyllenhaal earlier this year.