Glee co-creator Ryan Murphy has cast Fringe star Anna Torv to join his pilot for a new HBO series described as "a modern, provocative exploration of human sexuality and relationships.”

Torv will also be joined for the Open pilot by Jennifer Jason Leigh who was most recently seen in ABC’s Revenge, reports Entertainment Weekly.

Torv is set to play a yoga instructor called Windsor who is in a relationship with Leigh’s character but who then meets Grace and feels an instant attraction to her.

Already announced cast members include Scott Speedman and Wes Bentley.