Sledgehammer

"OPENING VOICEOVER"

- Meredith Grey

 is the first episode of the twelfth season and the 245th 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.
 * It's also the fourth season premiere written by Stacy McKee and the second directed by Kevin McKidd.
 * 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.