- When Emily's biggest takedown yet crashes and burns, she must rely on help from an unlikely source to investigate what went wrong.
- Meanwhile, to protect her own future, Victoria makes a bold move to secure her independence.
"Revenge" stars Emily VanCamp as Emily Thorne, Madeleine Stowe as Victoria Grayson, Henry Czerny as Conrad Grayson, Josh Bowman as Daniel Grayson, Nick Wechsler as Jack Porter, Gabriel Mann as Nolan Ross, Christa B. Allen as Charlotte Clarke and Barry Sloane as Aiden Mathis.
Guest starring James LeGros as Father Paul Whitley, Justin Hartley as Patrick Osbourne, Kathleen York as Sheila Lurie, Jack Merrill as Detective March, Conor Leslie as Bianca, Victoria Park as Anna, Kavita Patil as Lucinda Martin, Brianna Brown as Lacey, Coley Mustafa Speaks as Paramedic, Tom Virtue as Doctor and Tiffany Jeneen as Nurse.
"Mercy" was written by Karin Gist and directed by J. Miller Tobin.