Orphan Black

1. S01E01Natural SelectionMarch 30, 2013 7.8Sarah, an orphan, gets caught up in a deadly conspiracy after learning that she is a clone. In the opener, Sarah witnesses the suicide of a
2. S01E02InstinctApril 6, 2013 7.8Sarah continues to impersonate Beth and gets her a second chance on the force.
3. S01E03Variation Under NatureApril 13, 2013 7.8Sarah's fake detective ruse stretches thin when the police find the body that she buried.
4. S01E04Effects of External ConditionsApril 20, 2013 7.8Sarah gets closer to finding the killer, but her efforts threaten to end her chances of a reunion with her daughter.
5. S01E05Conditions of ExistenceApril 27, 2013 7.9Evidence suggests that the orphans are part of an ongoing experiment. Sarah suspects Paul, but her probing inadvertently triggers Paul's own
6. S01E06Variations Under DomesticationMay 4, 2013 8.1Alison's paranoia puts all of the orphans at risk. Meanwhile, Sarah must decide who to trust with her secret.
7. S01E07Parts Developed in an Unusual MannerMay 11, 2013 7.9Sarah confronts the conspiracy head-on, while the trust between herself and Paul weakens. Meanwhile, Cosima grows closer to Delphine and the
8. S01E08Season's bestEntangled BankMay 18, 2013 8.2Sarah's actions pit the orphans against each other; Paul tries to cover up Sarah's existence; Alison takes vengeance on her suspected monito
9. S01E09Unconscious SelectionMay 25, 2013 8.1Dr. Leekie makes Sarah reconsider taking revenge after Kira is threatened. Meanwhile, Cosima faces the truth about Delphine; and Sarah decid
10. S01E10Endless Forms Most BeautifulJune 1, 2013 8.2The Orphans must decide whether to make peace with their creators; Sarah is forced into a showdown with the enemy.

Season 1 ranked & reviewed

1. S02E01Nature Under Constraint and VexedApril 19, 2014 7.4Series 2 begins with Sarah searching for her missing daughter and suspecting that ruthless pro-clone Rachel is behind the disappearance. Mea
2. S02E02Governed by Sound Reason and True ReligionApril 26, 2014 7.3Sarah gets Art to help her find Kira and is shocked when she learns where the trail leads. Meanwhile, Alison struggles with Aynsley's death;
3. S02E03Mingling Its Own Nature with ItMay 3, 2014 7.1Sarah turns to an old flame from her past as she hits the road with Felix, but their brief respite is brutally shattered. Sarah then realise
4. S02E04Governed as It Were by ChanceMay 10, 2014 7.5Sarah comes home to search for answers and with Cosima's help she digs into the origins of the clone experiment. The hunt takes her into per
5. S02E05Ipsa Scientia Potestas EstMay 17, 2014 7.4Rachel goes on the warpath and lashes out at Sarah's loved ones. While Sarah tries to keep them safe, an unexpected visitor threatens to der
6. S02E06To Hound Nature in Her WanderingsMay 24, 2014 7.5Sarah joins forces with an unlikely ally, when she follows a trail of clues that she hopes will lead her to the origins of the clone experim
7. S02E07Knowledge of Causes, and Secret Motion of ThingsMay 31, 2014 7.4A rehab confidante betrays Alison and threatens to expose the truth about Aynsley's death, which causes Alison to go into a free fall on the
8. S02E08Variable and Full of PerturbationJune 7, 2014 7.1A new player in the clone conspiracy emerges and turns up at Felix's door, which sends him into crisis mode. Meanwhile, Sarah struggles with
9. S02E09Things Which Have Never Yet Been DoneJune 14, 2014 7.3Cosima takes a turn for the worse, which forces Sarah to take desperate measures that result in tragic consequences for those she loves. Mea
10. S02E10Season's bestBy Means Which Have Never Yet Been TriedJune 21, 2014 7.6The 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

Season 2 ranked & reviewed

1. S03E01The Weight of This CombinationApril 18, 2015 6.9Season 3 begins with Sarah pursuing the missing Helena who is being held in a faraway compound. Sarah uses her wiles and acting chops to det
2. S03E02Transitory Sacrifices of CrisisApril 25, 2015 6.6Castor pursues the Leda clones for original tissue samples. Meanwhile, Helena, who is pregnant and imprisoned, is examined by a mysterious v
3. S03E03Formalized, Complex, and CostlyMay 2, 2015 7.0Leda and Castor are both on the hunt for original clone DNA. On the lam, Mark and Gracie pursue new leads to find the samples that might set
4. S03E04Newer Elements of Our DefenseMay 9, 2015 7.3Mark is taken down in a Prolethean shoot-out and Sarah must step in to help. But as Sarah gathers intel that puts her on the trail of the or
5. S03E05Scarred by Many Past FrustrationsMay 16, 2015 7.0Helena and her seestra are reunited at the Castor camp when Sarah is captured. As Sarah suffers testing, Paul appears to chide her; but his
6. S03E06Certain Agony of the BattlefieldMay 23, 2015 7.5Paul is pushed into action when he discovers the ugly truth behind the Castor Boys' logbooks of names. Meanwhile, Felix becomes desperate fo
7. S03E07Community of Dreadful Fear and HateMay 30, 2015 7.1Alison 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
8. S03E08Ruthless in Purpose, and Insidious in MethodJune 6, 2015 7.5When Rachel makes a promise to Sarah, it comes with a hefty price. Meanwhile, Helena and Gracie work with the Hendrixes, and Donnie takes Ke
9. S03E09Season's bestInsolvent Phantom of TomorrowJune 13, 2015 7.7Clone Club heads to London to track down the Castor Original, but their enemies follow closely.
10. S03E10History Yet to Be WrittenJune 20, 2015 7.5Kendall may be the key to stop Castor; the sisters appear to be thwarting their most dangerous foe.

Season 3 ranked & reviewed

1. S04E01The Collapse of NatureApril 14, 2016 7.9After two months of respite, Sarah's hard-won refuge in Iceland is shattered by a Neolution attack. Once again forced to flee, she realizes
2. S04E02Transgressive Border CrossingApril 21, 2016 7.8After evading a Neolution attack in Iceland, Sarah returns home to track down an elusive new ally. She follows breadcrumbs and uncovers the
3. S04E03The Stigmata of ProgressApril 28, 2016 7.9As Sarah reels from the shocking discovery of Neolution's biotech, she's desperate to find answers. Always impulsive, she follows a lead int
4. S04E04From Instinct to Rational ControlMay 5, 2016 8.0Sarah forms an alliance with a former enemy in hopes of getting to the head of Neolution. Elsewhere: Alison orders Felix and Donnie to invad
5. S04E05Human Raw MaterialMay 12, 2016 7.6While Sarah takes the day off to reconnect with Kira, Cosima steps up and infiltrates an exclusive Neolutionist fertility research center. A
6. S04E06Season's bestThe Scandal of AltruismMay 19, 2016 8.3When 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 spe
7. S04E07The Antisocialism of SexMay 26, 2016 7.7Sarah regresses to old habits while struggling to cope with a loss. Following in Beth's footsteps, Sarah questions her strength to carry on.
8. S04E08The Redesign of Natural ObjectsJune 2, 2016 8.0As Alison is terrified by Neolution threats made against Donnie, Sarah and Mrs. S question her loyalty to her sestras. Siobhan sneaks out to
9. S04E09The Mitigation of CompetitionJune 9, 2016 8.2With Susan Duncan deposed, Sarah finds herself in the same position as Rachel–under Evie Cho's heel. The archenemies form an uneasy alliance
10. S04E10From Dancing Mice to PsychopathsJune 16, 2016 8.2When communication with Cosima is cut off and Neolution appears to be within striking distance, Sarah's alliance with Rachel goes out the wi

Season 4 ranked & reviewed

1. S05E01The Few Who DareJune 10, 2017 8.0Sarah is deeply wounded and struggling to stay alive on the Island. Driven deep into its forest by Neolutionists and worse, she strives to m
2. S05E02Clutch of GreedJune 17, 2017 8.0Captured by Neolution, Sarah receives a damning ultimatum from Rachel: come into the fold, or lose your family. Her decision causes a clash
3. S05E03Beneath Her HeartJune 24, 2017 8.2Stuck on the sidelines with Neolutionists crawling all over her home, Alison seeks to return to her community center, but Bailey Downs has m
4. S05E04Let the Children and Childbearers ToilJuly 1, 2017 7.9Mrs. S. and Sarah set out to investigate a lead on a Neolution defector; an unexpected reunion takes place; Cosima has a terrible discovery.
5. S05E05Ease for Idle MillionairesJuly 8, 2017 8.0Sarah and Kira spend time at home; secrets are unlocked about Kira's gifts; Cosima joins Delphine at the mansion.
6. S05E06Season's bestManacled Slim WristsJuly 15, 2017 8.3Cosima is forced into an alliance that accelerates P.T. Westmorland's agenda; Krystal stumbles onto a vital clue.
7. S05E07Gag or ThrottleJuly 22, 2017 8.2Westmoreland demands a more aggressive action on Kira; Sarah fights to save her daughter; Rachel discovers a dark secret; Cosima has a clue
8. S05E08Guillotines DecideJuly 29, 2017 8.3Mrs. S orders the sisters to celebrate Felix's art opening; Sarah remains on edge with a nagging suspicion that S is hiding something.
9. S05E09One Fettered SlaveAugust 5, 2017 8.2A devastating loss is suffered; Sarah learns that Helena has been kidnapped; Clone Club bands together to find Helena before her babies are
10. S05E10To Right the Wrongs of ManyAugust 12, 2017 8.3Helena takes shelter behind enemy lines, and Sarah and Art struggle to protect her and end the siege.

Season 5 ranked & reviewed