Episode 19 of season four may have been a little dull, but it seems episode 20 titled "Burn" will be action-packed. The show is also going towards its finale and has introduced a mysterious new villain, one hell bent on killing Victoria and Amanda.

In "Burn", Victoria gets attacked and becomes proactive about her safety, according to the episode's description by TVGuide. Naturally, the Grayson matriarch blames Amanda for the attack and this adds one more reason to the long list of existing ones for taking revenge. Fans should expect the vendetta-driven mother of Daniel to retaliate by plotting something against her. In the promotional photos released by ABC via SpoilersGuide, Victoria is seen having a lengthy conversation with Louise and Margaux. It seems that the two are consoling her and plotting a plan to exact revenge on Amanda.

Promotional photos also indicate that Jack will be taking a break from Amanda. But later he is seen waiting for a text message. Is he waiting for Amanda's call? The episode's description states that Emily will accept what her goal truly is. Will this mean she realizes that all she wanted was her childhood friend Jack all along? Fans would certainly love for them to be finally together. Additionally, an image shows Ben looking gloomy, so does this mean Amanda broke up with him?

However, the most shocking spoiler can be gleaned from photos of episode 21 "Aftermath" that show Mason's resurgence on the show. Devout viewers of the show may recall that he spent his prison time writing the true story of David and Amanda Clarke and threatened to sell it to Victoria. Emily faked his death and broke him out of prison in order to cajole him to keep her secrets. But it seem he's back and Emily doesn't look too happy about it.

Louise's character will also get interesting as showrunner Sunil Nayar told TVLine that, "She'll start to question her fidelities to everybody she's met on the show and make some very dramatic decisions as we head towards the finale."

"Revenge" airs on Sundays at 1o p.m. ET on ABC.