Eric Stoltz

Grey's Anatomy will have a new patient this winter — and he won't be an easy one to treat. Eric Stoltz will be rolled in to Seattle Grace's halls as a serial killer in need of serious medical attention, TVGuide.com has confirmed.

Stoltz, who has also directed several episodes of the series, has had nothing but praise for the series in recent months. Describing his experience, he previously told TVGuide.com, "It's the difference between driving a bus and riding a bike — and on that bus are 17 unbelievably talented people." He added, "[Grey's] is an embarrassment of riches. It's quite mad, in a delightful way."

As a patient, Stoltz will not only be adding to the madness, but also presenting the docs with ethical questions, says EW's Ausiello, who first reported the casting.

In addition to his hospital visit, Stoltz will also be starring in the Sci Fi Channel's Battlestar Galactica prequel, Caprica, which just got the greenlight to series.

What kind of trouble do you think Stoltz's character will stir up?