The latest Justified opens at Winona's house. After being disturbed by prospective buyers, Winona tells Raylan she's done with realtors because (referring to her ex Gary) "the only thing he doesn't mean is what he's actually saying". This gives our Raylan a thought...
At the prison, Boyd approaches a nervous Dickie with a concealed knife, but before he can act, a guard interrupts by saying the Crowder has a visitor.
That visitor is Raylan, who claims to have not been himself lately and will amend his statement so Boyd will be released the next morning. Boyd is lost for words - he doesn't have long to exact revenge on Dickie.
Boyd then learns from Dewey in the yard that Dickie has been taken to isolation by the guards. It seems Raylan had a hand in that. But Boyd, not to be deterred, glances at one of the guards and has a plan up his sleeve.
Meanwhile, Art is catching up with another marshal in his office - Bill Nichols, who works in witness protection. Bill visits Mary, a mother in protection, to check up on her and make sure she's following all the guidelines - which includes no contact at all with any of her family or friends.
Mary is worried that even after she testifies, they'll come for her. She doesn't believe Carlos Salazar is one to forgive and forget. But Bill reassures her that she's safe in the programme as long as she continues to stick to the guidelines.
Bill leaves in his car, but it's clear he's being tailed. Bill pulls over and confronts the man, but he's shot in the leg in return. The shooter, holding him at gunpoint, says: "Sorry Bill but you know how it is..."
It's up to the marshals to investigate Bill's murder, with a helping hand from assistant director Goodall (Carla Gugino), who appears to know Raylan quite well. Raylan, Goodall and Art discuss the case - Bill was shot in the leg and head, but they happened several hours apart. It's theorised that he was tortured before he was killed.
This leads the trio to be concerned for the safety of the three people in the area who were under witness protection - Rachel is in fact with Mary right now.
Goodall tasks Raylan with accompanying her to see Joe Delahunt, a suspect who only arrived in Lexington three days earlier. He has ties with Terry Powe - formerly Walter - another man who was forced into witness protection.
Art visits Powe at his house - and it's revealed that he was the one who tailed and shot Bill!
Powe, of course, feigns ignorance about the whole Bill situation, while Art recommends he starts packing his bag in case his location was compromised. Powe agrees, but secretly hides a bulky bag in the apartment and stashes a gun with his clothes.
Back with Boyd at the prison, he and the guard acknowledge each other as Boyd gets himself in a fight with his fellow inmates. After he's treated at the infirmary, he's taken to isolation in the cell next to Dickie's.
Raylan and Goodall arrive at Joe Delahunt's hotel room, and they awesomely take down two of his henchmen with remarkable synchronisation. Goodall then starts to threaten Joe in a bid to find out who killed Bill.
Art disarms Powe and ties him to a chair back at Powe's place. He goes into badass mode as he punches the guy in the face twice before he finds Powe's bag of money. He's worked out the killer's motives.
You see, Joe had revealed to Raylan and Goodall that Powe wanted to make things all square with him and get back to his criminal ways. Joe named a price of two million dollars thinking it would be an impossible amount, but he came down to Kentucky when Powe promised the cash.
Art explains that the only way Powe could get that money was to tail Bill Nichols to find the other witness protection clients, and then sell them out to whoever's looking for them. Unfortunately, Bill figured out he was being followed, and what happened next was unplanned.
This only enrages Art further, because that means Powe intended to hurt his fellow protectees who are living scared every day just like him - only it's because they wanted to do the right thing and not because they were selfish and wanted to stay out of jail.
He then threatens to shoot Powe in the head unless he reveals who's in danger.
That person is Mary, and Rachel gets a phone call from Art just as a car with two armed thugs pulls up outside. Rachel, Mary and her two kids hide in the attic, but a child's crying leads one of the thugs to pull down the attic ladder and climb up.
Just as Raylan, Art and Goodall arrive at the house, Rachel shoots the thug in the head. Art storms into the house and shoots the other guy.
In the aftermath, Rachel reveals that she's okay despite it being the second time she's killed a man. Winona shows up at the marshal's office to check if Raylan's fine. He is, and they share a kiss with a possibly wistful Goodall watching.
Raylan and Goodall say goodbye to each other as she has a flight home to take, but not before Art reveals that the carpet from Arnett's office from the previous episode has been pulled out with the concrete underneath bleached. Art suggests it might be worth investigating tomorrow...
Back at the prison, the guard Boyd's struck a deal with lets him have a bit of alone time with Dickie in his isolation cell. But Boyd isn't there to kill him - he's there to ask where all the family money is.
A scared Dickie reveals that a man named Limehouse has it, but he'll only give the money to him in person. Interestingly, the guard eavesdrops on this conversation.
The next day, Boyd is released from prison and is greeted by Ava, who is disappointed to learn that Limehouse has the money. He's clearly a man to be feared.
And in fact, we get a first glimpse of him, played by Mykelti Williamson. It's nighttime and he's speaking menacingly to an underling of his named Bernard. It's obvious that Bernard has done something to displease Limehouse and is nervously awaiting the punishment he will receive.
Limehouse starts to describe the painful and burning effects of lye and presents Bernard with a choice. Get his hand burned with lye and they're square, or forgo the punishment but the next time he screws up, he's a dead man.
Bernard chooses the second option before he is led away by Limehouse's henchman - whose hand appears to have been burnt with lye a long time ago.
• The history between Gugino's character Goodall and Raylan Givens is left largely unexplored, but they had great chemistry together. Seeing them share scenes makes this writer only more disappointed that Winona remains rather bland and wishy-washy.
• And it seems Raylan and Winona are in it for the long haul, with a baby on the way and a much-focused on kiss at the end of the episode. Let's hope they give Winona an interesting arc this season.
• Meanwhile, Williamson's mysterious Limehouse is already an intriguing new addition. Will he be teaming up with Boyd?
• "Where the hell is the goddamn ice machine?" Ha!
• A special mention to Art and particularly actor Nick Searcy. Can we have more badass Art in the future?
• Finally, it was great to see more of the underused Rachel. She doesn't seem to be affected by killing the thug - after all, she saved innocent lives.