On the upcoming season of primetime soap "Revenge," Nolan will throw a party that will be crashed by a mystery guest. 

On the October 13 episode of the third season, the preppy techie will throw a housewarming (or boatwarming) party, which will be attended by the who's who of the Hamptons. Everything is going swimmingly until "an unexpected guest" makes an appearance, according to the official synopsis. 

New photos of the episode hint that the party crasher may be Aiden (Barry Sloane). The photos show that Emily (Emily VanCamp) is certainly not happy to see him. 

Before Nolan's party takes place, the new season will open with a flash forward to Emily's wedding day. The season opens on Emily in a wedding dress getting ostensibly shot in the stomach, then falling off a boat. The season premiere will backtrack from the shocking fast-forward by rewinding to the previous Memorial Day weekend, which is months after the second season's finale. 

The first episode will feature Victoria's (Madeleine Stowe) inappropriate relationship with her estranged son, Patrick (Justin Hartley). Daniel (Joshua Bowman) will also find a new love interest in Margaux (newcomer Karine Vanasse). 

A major character will be diagnosed with a life-threatening ailment in the season opener, and Emily will also pay back Nolan (Gabriel Mann) for his huge favor to her. Jack (Nick Wechsler) will also share a scene with Emily in which two big twists are revealed. Emily will then enlist another character's help to get rid of Ashley Davenport (Ashley Madekwe).

It will also be revealed that a major character has switched allegiances. 

The season premiere will also feature a moment of Emily and her enemy, Victoria, getting along. "We have a moment where we actually band together," VanCamp revealed to TVLine.  

Emily's takedowns in season three will play out over multiple episodes. The story arcs will also delve deeper into Emily's psyche. Showrunner Sunil Nayar explained season three's plot changes to TVLine. "We're going to use them [revenge plots] to explore who Emily is a little bit more than we've had a chance to in the past," Nayar said.

The third season of "Revenge" premieres Sunday, September 29 on ABC.