The Best Episodes of Orphan Black

There are so many good episodes of Orphan Black, but which ones really stand out? Do you like "Certain Agony of the Battlefield" the best, or is "Guillotines Decide" your favorite episode of Orphan Black? To determine once and for all what the best episodes of Orphan Black are, let's rank every Orphan Black episode from all five seasons from best to worst.

A Canadian science fiction series, Orphan Black tackles the issues surrounding human cloning and individualism as the main protagonist Sarah Manning is one of several clones; she takes over the identity of a fellow clone. The thriller-drama premiered on May 13, 2013 in Canada (Space) and the United States (BBC America). For her portrayal of Sarah Manning in Orphan Black, Tatiana Maslany has received wide acclaim, including the Emmy Award for Outstanding Lead Actress in a Drama Series" in 2016.

Vote up your favorite episodes of Orphan Black, and downvote any bad episodes that you really didn't enjoy, despite how much you love the series as a whole. It can be painful to put one Orphan Black episode over the other when there are so many good ones, which is why you can vote on however many episodes you like. Make sure to check out these other shows like Orphan Black once you've made your voice heard!

Ranked by
  • From Dancing Mice to Psychopaths

    From Dancing Mice to Psychopaths

    Season 4 Episode 10: When communication with Cosima is cut off and Neolution appears to be within striking distance, Sarah's alliance with Rachel goes out the window. Sarah lures a high-level Neolutionist into a trap, and sets out to bring down Neolution once and for all.
  • The Collapse of Nature

    The Collapse of Nature

    Season 4 Episode 1: After two months of respite, Sarah's hard-won refuge in Iceland is shattered by a Neolution attack. Once again forced to flee, she realizes no matter how far her family runs it will never be far enough.
  • The Scandal of Altruism

    The Scandal of Altruism

    Season 4 Episode 6: When Cosima admits doubts about finding a cure in time to save her life, Sarah makes a lone decision that exposes Kendall to those she's spent years hiding from. Meanwhile, Art and Felix team up to protect naïve clone, Krystal Godderitch, from herself.
  • To Right the Wrongs of Many

    To Right the Wrongs of Many

    Season 5 Episode 10: Now in labor, Helena is forced to hunker down in the basement of Old Dyad for the delivery. It's a cage match for survival as Sarah and Art struggle to protect her in a desperate last stand against Neolution.
  • By Means Which Have Never Yet Been Tried

    By Means Which Have Never Yet Been Tried

    Season 2 Episode 10: The war with Dyad is all but lost when Rachel's latest ploy forces a broken Sarah to concede. The Clone Club springs into action, uniting in a reckless gambit to save Sarah. As they fight to gain their freedom, Sarah encounters a new ally and uncovers a terrifying new dimension to the conspiracy.
  • Certain Agony of the Battlefield

    Certain Agony of the Battlefield

    Season 3 Episode 6: Paul digs and finds the ugly truth behind the Castor Boys' logbooks of names, pushing him into action. Meanwhile, Felix is desperate for info on Sarah's whereabouts, and presses the still-ailing Rachel for any shred of a lead. In order for Donnie and Alison to take their money-making endeavor to the "next level" she must introduce Jason Kellerman to her unique business plan.
  • Guillotines Decide

    Guillotines Decide

    Season 5 Episode 8: With Kira safely out of Dyad, Mrs. S orders the sisters to take a night off from their sleuthing to celebrate Felix's art opening. A desperate Rachel reunites with an old ally.
  • Variations Under Domestication

    Variations Under Domestication

    Season 1 Episode 6: Alison's paranoia has boiled over, putting all the Orphans at risk. But when Sarah, Alison and Beth's worlds dangerously collide, Sarah must decide who to trust with her secret.
  • Endless Forms Most Beautiful

    Endless Forms Most Beautiful

    Season 1 Episode 10: Sarah's last chance to bring her nemesis back to sanity slips away as Art intervenes to get answers of his own. Meanwhile, the Orphans must decide whether to make peace with their creators, as Sarah is forced into a deadly confrontation with their enemy.
  • The Redesign of Natural Objects

    The Redesign of Natural Objects

    Season 4 Episode 8: As Alison is terrified by Neolution threats made against Donnie, Sarah and Mrs. S question her loyalty to her sestras. While Sarah is distracted, Siobhan sneaks out to seek vengeance. Meanwhile, Cosima and Susan Duncan work together in a final attempt to discover a cure.
  • Ruthless in Purpose, and Insidious in Method

    Ruthless in Purpose, and Insidious in Method

    Season 3 Episode 8: When Rachel makes a promise to Sarah, it comes with a hefty price. Meanwhile, Helena and Gracie work with the Hendrixes, and Donnie takes Kellerman to task. Over at Castor, Coady and Benchman scheme to track down the Castor Original, and Rudy descends on DYAD for a much needed asset.
  • Community of Dreadful Fear and Hate

    Community of Dreadful Fear and Hate

    Season 3 Episode 7: Alison must secure a store front in order to take her and Donnie's business to the "next level". But things don't go according to plan when her mother, Connie, proves to be a major hindrance. Cosima is facing familiar health issues and calls upon Alison for a favor. An unassuming Scott gets closer to the greatest discovery of all, when he sits down with beleaguered clone Rachel.
  • History Yet to Be Written

    History Yet to Be Written

    Season 3 Episode 10: As Clone Club races towards the truth, Castor and Topside force Sarah to make uneasy alliances. But there is some rest for the wicked, when Donnie gives Helena an unexpected 'gift', and the results of Alison's candidacy finally come in. Even as team Leda takes a moment to breathe, change is afoot and a life hangs in the balance.
  • The Antisocialism of Sex

    The Antisocialism of Sex

    Season 4 Episode 7: Sarah regresses to old habits while struggling to cope with the consequences of her decisions - reconnecting with Beth on a dark night of the soul. Back at the lab, Cosima, haunted by vicious memories and news of Delphine, attempts a dangerous Hail Mary to find a cure. At the Hendrixes, Alison is more determined than ever to create normalcy for her kids.
  • Things Which Have Never Yet Been Done

    Things Which Have Never Yet Been Done

    Season 2 Episode 9: Cosima takes a turn for the worse, forcing Sarah to take desperate action - with tragic consequences for those she loves. The Proletheans set their ultimate plan in motion. Alison and Donnie tangle with the law.
  • Variation Under Nature

    Variation Under Nature

    Season 1 Episode 3: Rocked by the revelation that she and her fellow "Orphans" are clones, Sarah just wants to get her hands on the money and skip town. But Sarah's fake detective ruse stretches thin when the cops find the body she buried and assign "Beth" to the case. As Sarah closes in on the killer, the hunter becomes the hunted.
  • Governed by Sound Reason and True Religion

    Governed by Sound Reason and True Religion

    Season 2 Episode 2: While Alison struggles with Aynsley's death and Cosima grapples with the worsening symptoms of her mysterious sickness, Sarah enlists Art's help to find Kira and is shocked when she learns where the trail leads.
  • Knowledge of Causes, and Secret Motion of Things

    Knowledge of Causes, and Secret Motion of Things

    Season 2 Episode 7: When a rehab confidante betrays Alison and threatens to expose the truth about Aynsley's death, she goes into free fall on the eve of Family Day. With Donnie and the kids set to visit, it's all clones on deck to contain the fallout.
  • To Hound Nature in Her Wanderings

    To Hound Nature in Her Wanderings

    Season 2 Episode 6: Sarah joins forces with an unlikely and untrustworthy ally, following a trail of clues that she hopes will lead her to the origins of the clone experiment. Cosima and Delphine make a discovery that could prove to be the key to treating her illness. Alison finds herself in unsavory company at rehab.
  • Human Raw Material

    Human Raw Material

    Season 4 Episode 5: Sarah's day off to reconnect with Kira quickly turns into a sleuthing mission aimed squarely at discrediting Felix's new ties. Cosima steps up with Donnie to further investigate the Neolutionist fertility research center. While Donnie bumps into an all too familiar face, Cosima makes a shocking discovery that leads her into a dangerous encounter.
  • Insolvent Phantom of Tomorrow

    Insolvent Phantom of Tomorrow

    Season 3 Episode 9: Sarah, Felix and Mrs. S take a trip with the hopes of tracking down the Castor Original. But they are not alone. Back home, Donnie tries to save the family business when Pouchy defects, but it is Helena who manages to secure a "full refund". Meanwhile, Cosima becomes suspicious of Shay, and Delphine takes the matter into her own hands.
  • Natural Selection

    Natural Selection

    Season 1 Episode 1: Sarah, a streetwise hustler on the run, witnesses the suicide of a stranger who looks just like her. Sarah assumes her identity, hoping that cleaning out the dead woman's bank account will solve all of her problems. Instead, after taking on the new identity, Sarah quickly finds herself caught in the middle of a deadly conspiracy and must race to find answers.
  • Instinct


    Season 1 Episode 2: With a body in her car and nowhere to turn, Sarah is forced to continue her con and earn "Beth" a second chance on the force. But with a killer on her tail, her only hope of finding answers lies with another apparent 'identical,' Alison.
  • Ipsa Scientia Potestas Est

    Ipsa Scientia Potestas Est

    Season 2 Episode 5: Rachel goes on the warpath, lashing out at Sarah's nearest and dearest. While she tries to keep her loved ones safe, an unexpected visitor threatens to derail Sarah's plans.
  • Effects of External Conditions

    Effects of External Conditions

    Season 1 Episode 4: Sarah realizes that the Orphans' survival is going to take more than police work. But tracking the killer threatens Sarah's long awaited reunion with her daughter, Kira. As Sarah gets closer to the killer, the killer gets closer to the truth - the ensuing showdown threatens to expose her ruse as a cop.