Watch 'How to Get Away with Murder' Season 2 finale online: Wes hunts down his dad; EP teases Mahoneys role in Season 3 plot

The last and final instalment of "How to Get Away with Murder" Season 2 details Wes Gibbins' (Alfred Enoch) decision to talk to Wallace Mahoney (Adam Arkin). The law student wonders if his mentor Annalise Keating (Viola Davis) has revealed the whole truth about his father. This will perhaps be revealed in Season 2 episode 15 titled "Anna Mae."

In last week's episode titled "There's my Baby," Annalise told Wes that Wallace Mahoney is his biological father. She also revealed that Wes's mother Rosa killed herself because she was raped by Wallace. While this truth shocked Wes, there was a lingering disbelief in her story.

[Spoiler Alert]

The promo Season 2 finale includes an intimate scene between Wes and Laurel Castillo (Karla Souza). He tells her that he is going to travel to New York to meet Wallace, but Laurel cautions him. She says, "Your dad has nothing to do with you are. So, please don't do anything else until Annalise is back." He agrees with her but it remains to be seen if he will indeed stay back in Philadelphia.

In an interview with TV Line, executive producer Pete Nowalk said that there are more layers to Wes's story and one that will be depicted in the show. Nowalk added that Wes has tried to handle difficult situations in a calmer manner, but he said that it remains to be seen if he will be able to have the same attitude in the season finale.

Nowalk teased about the future of the show and said that "How to Get away with Murder" has a huge Wes and Annalise angle which includes the Mahoneys.

"We'll go back to work in two months and see how we feel, but obviously there's a big storyline for Wes and Annalise there. There's a lot of unfinished business — but you'll find out more [on Thursday] about the future of that storyline," he said.

Season 2 episode 15's synopsis (via TV Guide) reads:

In the Season 2 finale, Annalise is feeling the pressure from the chaos surrounding her and is desperate to put it behind her. Meanwhile, Frank reflects on his multitude of sins; and Wes gets closer to learning the truth about his past.

"How to Get Away with Murder" Season 2 finale airs Thursday, March 17, at 10 p.m. EST on ABC. You can live-stream the show via ABC GO.