WATCH: Promo For All New GREY'S ANATOMY on ABC

April's crisis of faith is challenged by a patient she treats who is a rabbi, and Meredith treats a patient who is a transplant surgeon from another hospital, on "Grey's Anatomy," Thursday, March 29th on ABC, streaming and on demand.

"Grey's Anatomy" stars Ellen Pompeo as Meredith Grey, Justin Chambers as Alex Karev, Chandra Wilson as Miranda Bailey, James Pickens Jr. as Richard Webber, Kevin McKidd as Owen Hunt, Jessica Capshaw as Arizona Robbins, Jesse Williams as Jackson Avery, Sarah Drew as April Kepner, Caterina Scorsone as Amelia Shepherd, Camilla Luddington as Jo Wilson, Kelly McCreary as Maggie Pierce, Jason George as Ben Warren, Martin Henderson as Nathan Riggs and Giacomo Gianniotti as Andrew DeLuca.

"Grey's Anatomy" was created and is executive produced by Shonda Rhimes ("Scandal," "How to Get Away with Murder"), Betsy Beers ("Scandal," "How to Get Away with Murder"), Mark Gordon ("Saving Private Ryan"), Krista Vernoff ("Shameless"), William Harper, Zoanne Clack, Debbie Allen and Fred Einesman are executive producers. "Grey's Anatomy" is produced by ABC Studios.

Watch the promo here: