You have to admire David Rosen. Even after everything he’s been through, he still believes in justice. And white hats.

I believe in white coats, like the fierce white trench Olivia wore in tonight’s episode. But I digress.

This week’s “Scandal” was a reminder that it’s not always so easy to tell the good guys from the bad. The show’s been so bonkers lately that the episode began with a “previously on” clip montage to remind us that David is preparing a case against B613.

The case would be a lot easier to build with Jake’s cooperation. As B613 alums, Huck and Quinn are helpful. Even Charlie’s on board! But Jake used to be Command — “the big fish” as David puts it. Which is probably why not even an immunity agreement could convince him to join David’s mission. “This is my death warrant,” Jake says. “Drop the case or I’ll drop it for you.”

This leaves Huck, Quinn and Charlie scrambling to find other B613 agents. They focus their efforts on people who worked directly with Jake. David arranges to place them in a safe house until they can testify in a secret grand jury hearing. You probably don’t need a spoiler alert to know that they all end up dead.

Charlie, arguably the world’s worst safe house chaperone, returns from an errand only to find that David Rosen’s star witnesses are no more. Jake is there and it looks bad. Charlie decides that he, Quinn and Huck should kill Jake. Huck agrees — “Jake isn’t Jake anymore,” he tells Quinn. “He’s in survival mode.” Quinn eventually accepts that they have to kill Jake, but she’s not happy about it. She knows that Olivia and Jake have a connection and credits him with helping to get Olivia home safe.

Olivia may be home safe, but she’s still dealing with the trauma of her kidnapping. We know this because Russell, the dapper gentleman Liv met at the bar two episodes ago, hears her shouting in her sleep in various languages. That answers our question about whether she (and we) would see Russell again. Actually, his name is Franklin Russell and he’s apparently slept over enough times to know that Liv’s name isn’t Alex. When Liv tells him to leave, he almost convinces her that he should stay a while.

Liv gets distracted by (what else?) work. A young congressman named Nicholas Reed asks for her help in exonerating his father, George, who is awaiting execution for murder. 15 years ago, George confessed to murdering his daughter’s math teacher. The teacher, 29, had a sexual relationship with Nicholas’s 14-year-old sister, who hanged herself after the math teacher broke her heart. Despite George’s insistence that he shot the teacher, Nicholas tells Olivia that his father is innocent.

Liv visits George in prison to tell him that she believes the congressman and that she’s working to get him off of death row, with or without his cooperation. Liv instructs Huck and Quinn (who aren’t busy enough already) to look for other potential victims. The search proves that Nicholas’s sister probably wasn’t the only student the teacher abused. It also gives Liv another idea: to look into the teacher’s ex-wife. She doesn’t get to speak to her, though — the wife died of cancer two weeks ago.

Still, Liv thinks that the wife may have had something to do with the murder and asks Quinn and Huck to search her home for any possible evidence. It seems odd that 15 years after the crime, evidence would just be sitting out in the woman’s basement. But that’s exactly where Huck and Quinn find a gun that matches the murder weapon. Ballistics confirm that it’s the same one that killed the teacher.

This is all too convenient for Liv, who figures out the real reason Nicholas is desperate to prove his father’s innocence. George took the fall for his son, so that Nicholas could live his life. Olivia convinces George that the best thing for his son is for him to own up to what he did. Nicholas admits that he killed the teacher and resigns from Congress, with Liv promising to help him revamp his image — and career — after he’s served his time.

The Reeds’s devoted father-son relationship wasn’t the only family-centric story line. Thanks to some vetting from Mellie’s campaign manager, Liz, we met Mellie’s (half) sister, Harmony. Harmony makes soap — sometimes out of bacon — and she’s fiercely loyal to Mellie, except when she isn’t. There’s some bad blood between the two sisters because Mellie’s father left her mother for Harmony’s mother. This glorious exchange pretty much captures their whole dynamic:

Harmony: “You think you’re better than me.”

Mellie: “I am better than you!”

The good news is they both like a strong drink. Bonus points to Mellie for my favorite line of the episode “Go and let me enjoy my hooch.”

Ultimately, it was Fitz who diffused the sibling rivalry tension — at least enough that Harmony won’t be doing any bombshell interviews that would ruin Mellie’s chances at winning her senate campaign or achieving her goal of making it to the White House. It would seem that Mellie needs to be more worried about Cyrus, who is pretty adamant that he doesn’t want to see her in the Oval Office. This could mean all sorts of things for Mellie’s campaign, so it will be interesting to see Cyrus try to get in Mellie’s way. Note, I said try.

And speaking of trying, Huck, Quinn and Charlie certainly attempted to kill Jake. But they stopped once they realized Jake was holding court in the apartment across the hall from Olivia’s. Jake told Huck he was watching out for Olivia, but hinted that he might change strategies if his former colleagues came after him. Everyone agreed to leave Jake alone, but Huck felt even more pressure to protect Liv. He showed up unannounced to make sure she got home okay and she dropped the bomb: She knows all about David’s plan to take down B613 and her father, thanks to Jake and his surveillance equipment. She chides Huck for not being honest with her and tells him that she doesn’t need his protection.

Jake is very much in on David’s takedown mission. He’s figured out what David failed to realize — his own assistant, the jovial Holly, is a member of B613. She’s the one who killed the agents in the safe house and she’s been feeding information to Rowan. Jake manages to kill her, but he tells David that they should expect that there are more covert agents among them. Jake offers David a towel to clean the blood off his face and a rather poetic assessment of their situation: “We’re the good guys, you just won’t always be able to tell.”

Is it a coincidence that Russell, er, Franklin, shows up at Liv’s door in the next scene? I’m going to say no — because guess who is standing right beside him? None other than Papa Pope. If I were Liv, I’d take Huck up on that offer to protect her. Just saying.

Lingering questions: Is Russell B613? What kind of vetting process does the attorney general’s office (not) have? Will Harmony be back? What is Rowan planning? And will Jake go ahead and sign that immunity agreement? Because he’s done a lot of bad things.