The BEST episodes of Orphan Black
Every episode of Orphan Black ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Orphan Black!
A streetwise hustler is pulled into a compelling conspiracy after witnessing the suicide of a girl who looks just like her.
#1 - Transgressive Border Crossing
Season 4 - Episode 2 - Aired 4/21/2016
After evading a Neolution attack in Iceland, Sarah returns home to track down an elusive new ally. As Cosima struggles with Delphine’s disappearance, Alison and Donnie host a pregnant and ever-hungry Helena. Meanwhile Felix, feeling like an outsider, embarks on his own journey of self-discovery.
#2 - The Mitigation of Competition
Season 4 - Episode 9 - Aired 6/9/2016
With Susan Duncan deposed, Sarah finds herself in the same position as Rachel — under the heel of a new HBIC — causing the archenemies to come together for the greater good. Cosima and Susan butt heads on the ethical implications of human experiments. Meanwhile, when the Hendrixes' legal counsel, Adele, further investigates Donnie’s case, she begins to suspect Felix is keeping deep secrets. Helena’s arrival forces Felix to make a difficult decision.
#3 - The Stigmata of Progress
Season 4 - Episode 3 - Aired 4/28/2016
As Sarah reels from the shocking discovery of Neolution’s biotech, she’s desperate to find answers. Rachel receives a visit from her keeper and takes a fraught step forward towards recovery. Meanwhile, Helena is mistaken for “Mrs. Hendrix” when she answers a visit from suspicious visitors.
#4 - Endless Forms Most Beautiful
Season 1 - Episode 10 - Aired 6/1/2013
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.
#5 - The Redesign of Natural Objects
Season 4 - Episode 8 - Aired 6/2/2016
As Alison is terrified by Neolution threats made against Donnie, Sarah and Mrs. S question her loyalty to her sisters. 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.
#6 - History Yet to Be Written
Season 3 - Episode 10 - Aired 6/20/2015
As Clone Club races towards the truth, Castor and Topside force Sarah to make uneasy alliances. Meanwhile, Kendall may be the key to stop Castor; the sisters appear to be thwarting their most dangerous foe.
#7 - To Right the Wrongs of Many
Season 5 - Episode 10 - Aired 8/12/2017
In the series finale, Helena prepares to deliver in the basement of Old Dyad while Sarah and Art fight to protect her from Neolution.
#8 - Gag or Throttle
Season 5 - Episode 7 - Aired 7/22/2017
As P.T. Westmorland demands a more aggressive approach with Kira, Rachel discovers a dark secret that makes her question her place within Neolution. Sarah fights to save her daughter.
#9 - The Scandal of Altruism
Season 4 - Episode 6 - Aired 5/19/2016
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.
#10 - Unconscious Selection
Season 1 - Episode 9 - Aired 5/25/2013
After Kira’s life is threatened, Sarah is on the warpath, but Dr. Leekie makes her think twice about her plans for revenge. Meanwhile, Cosima faces the truth about Delphine, forcing her to choose sides. Now, it’s up to Sarah to decide the killer’s fate, but the truth about where Sarah came from changes everything.
#11 - Human Raw Material
Season 4 - Episode 5 - Aired 5/12/2016
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.
#12 - From Dancing Mice to Psychopaths
Season 4 - Episode 10 - Aired 6/16/2016
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.
#13 - From Instinct to Rational Control
Season 4 - Episode 4 - Aired 5/5/2016
Sarah forms an alliance with a former enemy in hopes of getting to the head of Neolution. Elsewhere, Allison orders Felix and Donnie to invade a Neolution fertility clinic and Susan Duncan leaves Rachel to make a devastating decision.
#14 - The Collapse of Nature
Season 4 - Episode 1 - Aired 4/14/2016
A flashback to Beth Childs' final investigation, days before her suicide.
#15 - Insolvent Phantom of Tomorrow
Season 3 - Episode 9 - Aired 6/13/2015
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. But nothing will ever be the same again when Leda finally finds what they’ve been looking for.
#16 - Conditions of Existence
Season 1 - Episode 5 - Aired 4/27/2013
When terrifying evidence suggests the Orphans are part of a sinister ongoing experiment, Sarah’s suspicions turn to Paul, Beth’s boyfriend. But her probing inadvertently triggers Paul’s own investigation, bringing him dangerously close to the truth. Meanwhile, paranoid Alison piles on a whole new level of complication.
#17 - Let the Children and Childbearers Toil
Season 5 - Episode 4 - Aired 7/1/2017
Following up on intel from a mysterious source, Mrs. S heads on the road with Sarah to investigate a lead on a Neolution defector. Meanwhile, an unexpected reunion takes place on the island, while Cosima's research leads her to a terrible discovery.
#18 - Guillotines Decide
Season 5 - Episode 8 - Aired 7/29/2017
The sisters take a night off to celebrate Felix's art opening. Wounded and desperate, Rachel reunites with an old ally, but their plans for revenge on Neolution put clone club in the line of fire.
#19 - Entangled Bank
Season 1 - Episode 8 - Aired 5/18/2013
Sarah's actions pit the Orphans against each other as she tries to plan her next move. As Paul tries desperately to cover up Sarah’s existence, Alison takes vengeance on her suspected monitor, which could cost her everything she holds dear.
#20 - Variations Under Domestication
Season 1 - Episode 6 - Aired 5/4/2013
Sarah’s hunt for answers is interrupted by a trip to the suburbs. 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.
#21 - Parts Developed in an Unusual Manner
Season 1 - Episode 7 - Aired 5/11/2013
With Paul missing, Sarah is forced to confront the conspiracy head on. But when Paul learns Sarah has kept essential information from him, the fragile trust between them threatens to shatter. Meanwhile, Cosima grows closer to Delphine and the dangerously fascinating Dr. Leekie.
#22 - Instinct
Season 1 - Episode 2 - Aired 4/6/2013
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.
#23 - Variation Under Nature
Season 1 - Episode 3 - Aired 4/13/2013
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.
#24 - Effects of External Conditions
Season 1 - Episode 4 - Aired 4/20/2013
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.
#25 - Natural Selection
Season 1 - Episode 1 - Aired 3/30/2013
Sarah, a streetwise hustler on the run from a lifetime of bad decisions, 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, the street smart chameleon is thrust headlong into a kaleidoscopic mystery. After taking on the new identity, Sarah quickly finds herself caught in the middle of a deadly conspiracy and must race to find answers.