'Revenge' Season 3 Episode 19 Spoilers: Emily Uncovers the Identity of Her Father's Conspirator [Video]

On the latest episode of "Revenge," Emily and Aiden reconnected, and Emily launched the next phase of her devious revenge plot. 

In "Blood," Victoria (Madeleine Stowe) visits Mason Treadwell in prison, who tries to force the former Amanda Clarke to reveal her master revenge plan.

Meanwhile, Aiden (Barry Sloane) and Emily (Emily VanCamp) go to England to visit his mother to figure out how his late father was tied to Pascal LeMarchal. She doesn't help him learn about the odd connection, but Aiden does find a clue carved on a table in his father's workshop: the name Oscar Chapman, a deceased reporter.

Once they're back in the Hamptons, Aiden thanks Emily for visiting his mother with him, then the two exes make passionate love.

Now that Pascal is back with Victoria, he reneges on his deal with Conrad, who then gossips about Pascal's intention to retire and turn his empire over to his son.

Daniel (Joshua Bowman) uses Margaux's (Karine Vanasse) distress over her brother taking over the magazine to make it appear to Jack (Nick Wechsler) like there is something romantic going on between them.

Later, after Mason calls Emily while she's in England, Jack sends Stevie (Gail O'Grady) to offer him a deal. He says he'll deal with Victoria instead.

But soon after, some face cream is delivered to his prison cell, and he applies it, and ends up having an allergic reaction and apparently dying.

Victoria uses the news to send a bottle of vodka to Stevie, and Stevie--a former alcoholic who is now sober-- goes off the wagon. Jack sends his drunk mom back to Los Angeles.

As the episode ends, Mason wakes up in a prison van. Nolan (Gabriel Mann) explains that Emily used the plot to break him out of jail and send him to the tropics. It's also revealed that Mason knows the mysterious Oscar Chapman, who faked his own death.

On the next episode, "Allegiance," "Victoria is confident Emily will take the bait when she sets a trap for her. Meanwhile, Emily uncovers the identity of one of her dad's main conspirators."

Watch the promo for "Allegiance" below, which airs Sunday, April 13 at 10 p.m. EDT on ABC.