The darkly passionate drama is directed by Daniel Aukin (Proof). Performances run through Aug. 2 on the Nikos Stage.
Arianda (Venus in Fur) and Rockwell (A Behanding in Spokane) are joined by Christopher Abbott ("Girls") and Tony nominee Gordon Joseph Weiss (A Fable, Ghetto).
Here's how Williamstown bills the play: "Holed up in a seedy motel on the edge of the Mojave Desert, two former lovers unpack the deep secrets and dark desires of their tangled relationship, passionately tearing each other apart. Beaten down by ill-fated love and a ruthless struggle for identity, can they ultimately live with, or without, each other?"
The creative team includes Dane Laffrey (scenic design), Anita Yavich (costume design), Justin Townsend (lighting design), Ryan Rumery (sound design) and David Leong (fight director).