Guest Marika Dominczyk is married to Scott Foley who previously appeared as Henry Burton.
One of the few episodes that does not have any voiceover.
This episode was extended from one hour to two.
There's no closing voiceover for this episode.
Derek: (to Mer) You have to... stay here. Don't move. Wait for me. I'll be back before you know it.
References a conversation he and Meredith had in the season 4 finale, when she built the house of candles and he kisses her but leaves to break up with Rose.
This episode starts and picks up right where the last one left off. No time jump.
There's flashbacks to season 3 episodes Wishin' and Hopin' and Staring at the Sun
Season 10 Episode 24: Fear(of the Unknown)
This conversation between Merideth and Amelia:
Amelia: This is the thing, Merideth. This is what it feels like! It feels like-
Merideth: Candy, but with blood.
Amelia: Only so much better!
This is a reference to Christina Yang's quote, "Oh, it's like candy, but with blood. Which is so much better." (Season 1 Episode 3: Winning the Battle, Losing the War)
"Go it alone" is a song by Beck from the album Guero
In this episode Meredith and Derek named their son Bailey.
When everyone is rushing the magicians wife to the E.R. the nurse ushers the magician and the assistant away and they disappear behind the wall. In the next shot, she is ushering them away again.
The hospital's name changed to Grey+Sloan Memorial.
Callie mentions having the Seahawks as patients. And Kenton Giles mentions having the Portland Trailblazers as patients.
Both of these teams are real. Callie was referring to the NFL team Seattle Seahawks and Kenton was referring to the NBA team Portland Trailblazers.
This episode covers the three month time span between the plane crash in the season 8 finale and the events in the season 9 premiere.
This episode takes place about three months since the plane crash.
The cases at the hospital, Callie's open femur, and the surgery Teddy, Owen & Bailey do are the same types of injuries that they are dealing with in the woods. Arizona has an open femur fracture, Mark has a serious chest injury.
The first scene and Richard's voiceover is from the first episode of the series where he is talking to the interns during their first day at the hospital.
This is part one of a two part crossover with Private Practice. The episode concludes on Private Practice in S5 Ep15 You Break My Heart.
Addison: It's a beautiful day to save lives.
Derek (shakes head): Nice.
A refernce to what Derek always says before any surgery.
Cristina: We don't have to do that thing where I say something then you say something and then someone cries and there's a moment or whatever?
Meredith: Oh, yuck.
Meredith: It's just that... Nothing is turning out the way I thought it would. It's like I don't even recognize my own life.
Cristina: I know what you mean. Ugh. I gotta go get some sleep. You gotta go get some sleep. You look like crap.
Meredith: I look better than you.
Cristina: Not possible
This entire conversation is a refernce to the conversation the had in the first episode A Hard Day's Night. Conversation from A Hard Day's Night:
Cristina: We don't have to do that thing you know where I say something and then you say something and then somebody cries and there's like a moment ...
Cristina: Good... You should get some sleep. You look like crap.
Meredith: I look better than you.
Cristina: Not possible.