Jessica Collins, Kevin Duda & Jane Pfitsch have joined the cast of Roundabout Theatre Company’s new production of Christopher Hampton’s lush and libido-driven Les Liaisons Dangereuses. They complete the cast of the Rufus Norris-directed staging, which features the previously announced Laura Linney (as La Marquise de Merteuil) and Ben Daniels (as Le Vicomte de Valmont). Previews begin April 11 toward an opening May 1 at Broadway’s American Airlines Theatre. The limited engagement will play through June 29. Joining Linney and Daniels in the company are Siân Phillips as Madame De Rosemonde, Mamie Gummer as Cecile Volanges, Kristine Nielsen as Madame De Volanges, Benjamin Walker as Danceny, Rosie Benton as Emile and Derek Cecil as Azolan.