STAGE TUBE: Sneak Peek - A Medical Miracle on ABC's GREY'S ANATOMY

On Thursday night's episode (November 3rd) of ABC's GREY'S ANATOMY titled "Heart-Shaped Box", the doctors become nostalgic when George O'Malley's mother, Louise, returns to Seattle Grace for medical help after a botched surgery at a neighboring hospital; the residents are inspired by a medical miracle when they witness a harvested heart that continues to beat outside the body; a new pediatric fellow excites Arizona and makes Alex feel threatened; Jackson lets his suspicions about Mark and Lexie interfere with his work; and Henry and Teddy have their first marital fight when he expresses interest in pursuing medical school. on . (ABC/RANDY HOLMES) Jesse Williams, CHYLER LEIGH, Justin Chambers

Considered one of the great dramas of our time and recipient of the 2007 Golden Globe Award for Best Drama Television Series and multiple Emmy nominations, including Outstanding Drama Series, "Grey's Anatomy" returns to ABC for its eighth season.

Meredith, Cristina, Alex, Jackson and April have all reached their 5th year as residents. In a year that can make or break a surgical career, the residents are tasked with their first-ever solo surgeries, no longer under their attendings' direct supervision in the O.R.

Love abounds in other places in the hospital, as Bailey's relationship with Nurse Eli continues to grow and Teddy falls deeper in love with her patient, Henry. Richard Webber focuses on caring for his beloved wife, Adele, who has Alzheimer's disease.

Seattle Grace Hospital is a place where life isn't lived in the black and white, but in the shades of grey.

GREY'S ANATOMY stars Ellen Pompeo as MerEdith Grey, Patrick Dempsey as Derek Shepherd, Sandra Oh as Cristina Yang, Justin Chambers as Alex Karev, Chandra Wilson as Miranda Bailey, James Pickens, Jr. as Richard Webber, Sara Ramirez as Callie Torres, Eric Dane as Mark Sloan, Chyler Leigh as Lexie Grey, Kevin McKidd as Owen Hunt, Kim Raver as Teddy Altman, Jessica Capshaw as Arizona Robbins, Jesse Williams as Jackson Avery and Sarah Drew as April Kepner.

GREY'S ANATOMY airs Thursdays at 9:00-10:02 p.m., ET on the ABC Television Network.

To view a clip from Thursday night's episode, click below!