Alison’s back this week and at her absolute Alisoniest. Right off the bat she’s not exactly making great life choices as she cozies up to undercover Angie-spy Vic and ends up telling him she watched while Aynsley’s scarf murdered her in a garbage disposal. But she also knit him a pair of gloves for being a good listener, so that’s nice! And yet despite all that bonding time, Alison overhears Vic on the phone with Angie admitting he’s been spying on Alison. Apparently since Alison wasn’t in the episode last week, they felt the need to knock out her story-lines fast.

Sarah’s still off attemping to pump info out of Daddy Duncan and his bird menagerie. Sarah thinks that Rachel really doesn’t know Leekie killed her mother, but Mrs. S disagrees and believes Rachel is a child of the Dyad now. Meanwhile, while Daddy Cal babysits Kira, he notices the green camera light on his computer has been on the whole time. It shuts off as soon as he notices, but it’s clear someone is definitely spying on him. He calls Sarah to inform her of the situation, but also tells her he’s got it all under control. The things this guy will do for a woman who robbed him several years ago, yeesh. Sarah shows up to help out, and Cal shows her the picture Kira drew of her “Aunties." Sarah insists her daughter just has an active imagination, then distracts Cal with some camper romping.

In sexy science news, Cosima, Delphine, and (less sexily) Leekie begin the stem cell treatment for Cosima’s illness. Delphine, who we know from last week is full of secrets, seems pretty confident it’s going to work, but Cosima’s not exactly on board the Good Ship Mysterious Experimental Treatment.

Time to leave bird paradise! Mrs. S summons Duncan to head out, but first tells him to grab “his mementos.” Instead, he dumps out his boxes and grabs some floppy disks that contain “absolutely everything.” What does it mean?! And more importantly, who's going to take care of those birds?!

There's trouble in sexy science paradise! Cosima walks in on Delphine telling Scott to keep something a secret from Cosima. It turns out they were using Kira’s stem cells from a tooth lost in her season one accident to cure Cosima. However, they’re running out of Kira cells, and now they need to bring the kid in for more. Cosima is definitely not thrilled about this violation of virtually everything, and it’s starting to look like Team Sexy Science is not exactly a thing anymore.  Au revoir, darlings. Maybe you can work it out!

Alison, in need of some expert guidance with this Vic issue, naturally calls Felix for help. The two then confront Vic, who apologizes but stands by his decision to rat on her. Felix reports that Sarah’s not happy about his behavior, and immediately Vic is reeled back in. Off on a lovely dock, Cal and Sarah’s happy family lunch where Cal suggest they all just up and move to Iceland is interrupted by Fe and Alison, who needs Sarah to show at rehab and talk to Vic so he doesn’t turn Alison in to the police. Sarah, being a wonderful Clone-sis, arrives at rehab and allows Vic to read a poem he wrote to atone. They don’t get too far into his attempt to win her back, however. Felix spiked Vic's tea and he falls face-first into a craft table. Of course, all this happens right in time for Donnie to bring the whole family along for visiting day!

Far from the rehab shenanigans, Mrs. S shows up at Leekie’s to announce she’s acquired the research of Susan and Ethan Duncan from the  disks. He wants to authenticate them before bargaining, and Mrs. S offers a trade — the disks for Kira’s protection. However, the visit actually seems to have nothing to do with the trade at all. Mrs. S calls Sarah to tell her that, judging from the conversation with Leekie, it seems Rachel really doesn’t know he’s responsible for her mother’s death. Also, new character alert! Leekie calls a mysterious confidante Marion to inform her of Duncan’s surfacing. They discuss potentially having to take Rachel down if she tries to fight them. To be continued!

Because Orphan Black loves nothing than to torture Tatiana Maslany in the best way, after a mishap with Alison and Sarah both being in the same place, Sarah is now trapped at family visitation day having to pretend to be Alison. Even better, she’s roped into giving a very impromptu speech in front of everyone, as well as engage in a role-playing (and nearly lie-revealing) exercise with Donnie. So just to be clear, this now means Sarah is pretending to be Alison pretending to be Donnie. Bring on the Emmys! Meanwhile, Felix and Actual Alison try to hide Vic’s unconscious body. However, the biggest surprise of the night comes when Donnie enters Alison’s room to find both his wife and Sarah. It's the first time he's seen the two together, and he's totally dumbstruck. About everything. True, he’s Alison’s monitor, but it turns out he never knew anything about the clones and believed he was recruited for a “Long Term Social Media” study by a college professor. This poor, idiotic man. Obviously Alison isn’t thrilled Donnie ruined her life and their marriage for a reason he didn’t understand and isn't about to forgive his misunderstanding. But there is a bright side! After the knocked-out Vic shows up unconscious in the lobby for everyone, including Detective Angie, to see, it looks like his word against Alison's is going to be pretty useless.

Poor Rachel is having a rough week. Mrs. S has arranged for her to meet her father, and she seems genuinely moved to tears, as is Daddy Duncan. When Rachel returns to the Dyad, she meets with Leekie, and expresses just how not-too-thrilled she is that he kept the whole ‘murdering her mother’ thing a secret. She records his confession that yes, he did stop her parents when they tried to run away with her (oh-so-close to a happy, normal life!), and then, in front of him, calls Mysterious Marion and puts the revealing conversation on speaker. So it looks like Marion and Rachel are on the same side and not Marion and Leekie. I think. It’s getting a little confusing here in Dyad-Land. Rachel fiercely banishes Leekie, telling him not even to go home before he escapes. She’ll spare his life because he raised her, but she'll only go so far. He kisses her goodbye before escaping into the night.

Cosima calls Sarah to deliver the unfortunate Kira/stem cell news, and the even more unfortunate part; she’ll need another tooth if she wants to continue the treatment. Kira, being the hardcore baby badass she is, actually pulls a tooth out herself. She and Sarah then kiss goodbye to the ever-doting Cal and go off on an adventure of their own. Everyone's on Team Save Cosima now!
 

Leekie, who is doing a terrible job at escaping, seems fresh out of luck in his attempt at running away. Donnie pulls up, demanding a word and even pulling a gun after Leekie laughs him off. Surprise, surprise; Donnie’s pissed Leekie lied to him about the experiment on Alison, thus causing the destruction of his picture-perfect family. Donnie announces he won’t participate anymore, only when powerfully proclaiming this, he accidentally shoots Leekie in the head. Whoops! So long Leekie! We hardly knew ye, and then it turned out you were evil! Hopefully a potential bright side for this is that Donnie and Alison can now both bond over their accidental murder tendencies. Next week, the clones deal with Leekie’s death, the news of more potential clones being developed, and Cosima’s rapidly deteriorating health. Come on girl, don’t let Kira have pulled out her own tooth for nothing!