Stairway to Heaven

"I believe in heaven. I also believe in hell. I’ve never seen either, but I believe they exist. They have to exist because without a heaven, without a hell, we’re all just headed for limbo. Heaven, hell, limbo, no one really knows where we’re going or what’s waiting for us when we get there. But the one thing we can say for sure, with absolute certainty, that’s there are moments that take us to another place, moments of heaven on earth. And maybe for now, that’s all we need to know."

- Denny Duquette, Jr.

 is the thirteenth episode of the fifth season and the 91st overall episode of Grey's Anatomy.

Short Summary
Meredith and Miranda each cross a line, William Dunn regrets his decision and Izzie finally confronts what Denny's appearance means.

Full Summary
Episode in detail.

Main Cast

 * Ellen Pompeo as Dr. Meredith Grey
 * Sandra Oh as Dr. Cristina Yang
 * Katherine Heigl as Dr. Izzie Stevens
 * Justin Chambers as Dr. Alex Karev
 * T.R. Knight as Dr. George O'Malley
 * Chandra Wilson as Dr. Miranda Bailey
 * James Pickens, Jr. as Dr. Richard Webber
 * Sara Ramírez as Dr. Callie Torres
 * Eric Dane as Dr. Mark Sloan
 * Chyler Leigh as Dr. Lexie Grey
 * Patrick Dempsey as Dr. Derek Shepherd

Special Guest Star

 * Jeffrey Dean Morgan as Denny Duquette

Guest Stars

 * Kevin McKidd as Dr. Owen Hunt
 * Eric Stoltz as William Dunn
 * Jessica Capshaw as Dr. Arizona Robbins
 * Samantha Mathis as Melinda Prescott
 * Amy Sloan as Kelly
 * Brandon Scott as Dr. Ryan Spalding
 * Melissa George as Dr. Sadie Harris

Co-Starring

 * Aaron Refvem as Jackson
 * Moe Irvin as Nurse
 * Mark Saul as Intern Steve
 * Molly Kidder as Intern Megan
 * Candice Afia as Intern Laura
 * Amrapali Ambegaokar as Intern Dani
 * Tymberlee Chanel as Intern Claire
 * Gloria Garayua as Intern Graciella
 * Joseph Williamson as Intern Pierce
 * Winston Story as Intern Leo

Notes and Trivia
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 * This episode's title originated from the song Stairway to Heaven, originally sung by Led Zeppelin.
 * This episode scored 14.25 million viewers.

Quotes

 * Izzie: Heaven or hell?
 * Denny: Yes.
 * Izzie: You're here for me.
 * Denny: Yes.
 * Izzie: No. You're not here for me. You're here FOR me. You're here for me.
 * Denny: I loved you so much. I loved you so much that when I got to come back for you, I thought... you were my heaven. But maybe... maybe I'm your hell.
 * Izzie: I'm sick. I'm sick, aren't I? And instead of telling me... instead of telling me to save my life - you son of a bitch! You selfish son of a bitch. I hate you! I hate you!
 * Denny: I didn't know that there was a chance. Miracles happen. Medical miracles happen every day. You said it! You said that!
 * Izzie: Leave! Leave.
 * Denny: I can go now... because you know. But it's your choice. You get to choose. But, Iz, If I go... I don't know... I don't know if I can come back. If I go...
 * Izzie: In the choice between heaven and hell, I choose heaven. I choose life. Go. Get out of here! Go out get of here! Go.
 * Denny: I really hope this is heaven.
 * Izzie: Go. What are you waiting for?
 * Denny: This.
 * (Denny kisses Izzie.)