Christina Ricci will guest star on the special episode of ABC’s sophomore hit Grey’s Anatomy that is slated to air February 5 after the network’s broadcast of Super Bowl XL, says The Hollywood Reporter.

The plot for the episode of the medical drama, from creator/executive producer Shonda Rhimes and Touchstone Television, is being kept under wraps.

Ricci’s character is said to be coming to Seattle Grace Hospital “not as a patient but in a life-and-death situation.” (Source)