If you thought Grey's Anatomy was running out of surprises after 15 seasons, you'd be wrong.

The hit medical drama has just revealed that a major "˜80s star will be joining the show for a mysterious plot line in the upcoming season - none other than Dirty Dancing star Jennifer Grey.

Next to nothing has been revealed about Grey's character, including whether she'll be connected to Meredith Grey (wouldn't that be fitting?) or another character from Seattle Grace.

Some speculate that Grey could play Jo's (Camilla Luddington) estranged mother, but we really won't know until we watch the big reveal in her first episode.

Grey, one of the "It Girls" of the 1980s, starred in blockbuster hits like Ferris Bueller's Day Off, and Dirty Dancing. She also recently competed on Dancing With the Stars, winning the Mirrorball Trophy with help from her partner, Derek Hough.

The actress tweeted the casting news after it broke, writing that she was "thrilled to play with this legendary tribe."

"Looking forward to some Grey-on-Grey's action..." she added.

But not all Grey's fans are so excited about the casting news, after multiple fan-favorite characters were written off the show in recent years.

"For a show that fired two great actresses "˜cause it had too many characters, you guys sure hire a lot of people huh," wrote one fan, referring to Sarah Drew and Jessica Capshaw's departures last season.

If you're curious why it seems like Grey disappeared from Hollywood after her initial success, it's because she really did.

In 1987, Grey was on vacation in Ireland with her Ferris Bueller costar and boyfriend, Matthew Broderick, when Broderick crashed the rental car he was driving into a local woman's vehicle.

While Grey only suffered minor injuries from the crash, the other driver didn't survive, and Grey admitted she was haunted by memories of the accident.

"One minute we're going down the road and music is playing, and the next minute...it's all different. I couldn't be fearless after that," she admitted to People in 2010.

"It didn't feel good to be the toast of the town."

While Grey continued to take small roles here and there, she admits that the crash basically sidelined her acting career for decades.

"My head was never the same," she said, "my ambition was never the same."

But Grey has been slowly building her career back up in recent years, doing voice work for animated shows and appearing on the Amazon series Red Oaks.

Maybe her appearance on Grey's this season will start an exciting new chapter in the star's long-running career.

[H/T: E! Online]

Who do you think Grey's character will be?