The latest installment of period drama "Downton Abbey" had love in store for some, while others were forced to make heartbreaking decisions. 

Anna (Joanne Froggatt) is struggling with the aftermath of being violently raped by Lord Gillingham's valet. She recoils whenever Bates (Brendan Coyle) tries to kiss her, and eventually tells Mrs. Hughes (Phyllis Logan) that she wants to move back into her old room upstairs in the main house. 

Lady Mary (Michelle Dockery), Lady Rose (Lily James) and Tom Branson (Allen Leech) make a trip to London, where Mary is surprised to see Lord Gillingham (Tom Cullen). Lord Gillingham is politely but aggressively pursuing Mary, taking the chance to see her whenever possible. 

The group, with Lady Rose's suitor in tow, go to a hip London jazz club, where African-American jazz band leader Jack Ross (Gary Carr) is performing. When Mary and Gillingham dance, Mary explains to him that she simply isn't ready to enter another romantic relationship so soon after Matthew's (Dan Stevens) death. 

Lady Rose's suitor becomes embarrassingly intoxicated, and runs out of the room to go vomit. Lady Rose is left by herself for a moment on the dance floor, so Jack Ross swoops in to save her from embarrassment. The family is utterly shocked to see her dancing with a black man, so Branson goes to the dance floor to break it up. 

Meanwhile, back at Downton, Daisy (Sophie McShera) tells her crush, Alfred (Matt Milne), where Ivy (Cara Theobold) is, when she knows full well that she is in a room making out with Jimmy (Ed Speleers). Alfred, who has a hopeless crush on Ivy, is heartbroken when he catches them together, and makes the decision to leave Downton by applying for a prestigious valet program in London. 

Branson is also dealing with the aftermath of his night with the scheming Edna Braithwaite (MyAnna Buring), who got Branson drunk then crawled into bed with him. Branson is ashamed about his actions, and recognizes that Edna has ulterior motives. 

Edna says to Branson that she may be pregnant, and if she is, she wants absolute certainty that Branson will marry her. Branson realizes Edna is trying to trap him to edge her way into the upper crust lifestyle. Branson goes to Mrs. Hughes, where Mrs. Hughes shames Edna for lying about her pregnancy (which Hughes only assumes is a lie, but is ultimately correct), and promptly gives her the boot. 

Mary then gets a surprise visit at Downton from none other than Lord Gillingham.

Mary is shocked when Gillingham proposes to her. Mary protests that he doesn't even know her, but he insists that he is in love with her and wants to spend the rest of his life with her. 

But Mary refuses his entreaties, and turns down his offer because she says she is not yet ready to give up Matthew. Although Lord Gillingham says he will now become engaged to a woman he doesn't love, he may reemerge later on. 

In London, Edith (Laura Carmichael) continues her romance with Mr. Gregson (Charles Edwards), who is leaving England to become a German citizen so he can be legally divorced from his former wife. When Edith stays the night at Gregson's, Edith's aunt, Lady Rosamund (Samantha Bond), chastises her for staying the night with a man to whom she is not married. 

On the next episode, "Questions of estate management pit Mary and Tom against Robert, while Bates' questions about Anna's suffering pressure Mrs. Hughes. Thomas installs a new ally, Violet hires a new gardener, and Alfred cooks up some ambition."

Watch the promo for the next episode here, which airs Sunday, Jan. 26 at 9 p.m. on PBS.