Sledgehammer

"OPENING VOICEOVER"

- Meredith Grey

 is the first episode of the twelfth season and the 246th overall episode of Grey's Anatomy.

Main Cast

 * Ellen Pompeo as Dr. Meredith Grey
 * Justin Chambers as Dr. Alex Karev
 * Chandra Wilson as Dr. Miranda Bailey
 * James Pickens, Jr. as Dr. Richard Webber
 * Sara Ramírez as Dr. Callie Torres
 * Kevin McKidd as Dr. Owen Hunt
 * Jessica Capshaw as Dr. Arizona Robbins
 * Sarah Drew as Dr. April Kepner
 * Jesse Williams as Dr. Jackson Avery
 * Caterina Scorsone as Dr. Amelia Shepherd
 * Camilla Luddington as Dr. Jo Wilson
 * Jerrika Hinton as Dr. Stephanie Edwards
 * Kelly McCreary as Dr. Maggie Pierce
 * Jason George as Dr. Ben Warren

Guest Stars

 * Giacomo Gianniotti as Dr. Andrew DeLuca
 * Eric Lange as Steven
 * Jenny Cooper as Bethany
 * Mandalynn Carlson as Jessica Tanner

Patient

 * Diagnosis:


 * Doctors:


 * Treatment:

Notes and Trivia

 * This episode's title originated from the song , originally sung by Fifth Harmony.
 * This episode scored million viewers.
 * This is the first episode in the entire series not to feature Patrick Dempsey in the opening credits.
 * It's also the first episode to credit Jason George as main cast.
 * The episode will be Jessica Capshaw's 150th appearance on the series.
 * It's also the fourth season premiere written by Stacy McKee and the second directed by Kevin McKidd.
 * This episode, along with Good Mourning, breaks the "tradition" of Rob Corn directing the first episode of the season being filmed, which he has done since the season four. He also didn't direct the season 11 premiere, but that episode was filmed after the second episode of the season, which Rob did direct.
 * The table read for this episode took place on July 15, 2015.
 * Filming for this episode started on July 22, 2015.
 * The episode will start three months after You're My Home.
 * Shonda Rhimes already revealed that despite of Jackson's ultimatum, April did re-enlist.