Casey Wilson on Grey's Anatomy

Happy Endings' Casey Wilson Checking Into Grey's Anatomy in March

Happy Endings vet Casey Wilson is taking a rare dramatic detour with a guest stint on Grey’s Anatomy, TVLine has confirmed.

Wilson will turn up in the ABC drama’s March 17 episode, which was directed by Grey’s regular Kevin McKidd and also features a guest turn by acting legend Rita Moreno.

According to sources, Wilson — who is currently fielding a half-dozen or so pilot offers — will play a pregnant patient named Courtney who’s emotionally repressed, funny, smart and passionate about her career. (Per the logline for the episode, Wilson’s character is a patient of Arizona’s who’s expecting — wait for it — quadruplets.)

Moreno, meanwhile, will play one half of a married couple who owns any room she walks into.

News of the Wilson and Moreno’s casting was first reported by The Hollywood Reporter.