Details are leaking out regarding the 18th episode of 90210.

What makes this installment unique? It will be directed by Jason Priestley.

The Beverly Hills, 90210 star told E! Online that his episode is "very ambitious, production wise." It calls for a large-scale disaster, one that Priestley teases causes a female to "[end] up in the hospital."

He would not reveal more than that, only adding that the incident in question does not involve Adrianna giving birth.

Meanwhile, with Tori Spelling set to come back to this famous zip code, Priestley made it sound like guest appearance on the other side of the camera was not out of the realm of possibility for himself.

"Never say never, right?" he said.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.