The BEST Episodes of Helix

Every episode ever - ranked by fan votes!

Last Updated: May 19, 2021

Network: Syfy

A team of scientists from the Centre for Disease Control travel to a high tech research facility in the Arctic to investigate a possible disease outbreak, only to find themselves pulled into a terrifying life-and-death struggle that holds the key to mankind's salvation...or total annihilation.

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Level X

#1 - Level X

Season 1 - Episode 9 - Aired Feb 28, 2014

The CDC teams learns the real purpose of the infection and Alan and Julia make a perilous journey to retrieve the canister that has the original source virus.

star 7.93
2,871 votes

#2 - Fushigi

Season 1 - Episode 10 - Aired Mar 7, 2014

In a last ditch effort to find help and a cure, Alan and Julia go to an abandoned satellite station discover a shocking secret that reveals Hatake's ultimate goal and the reason why he has developed the deadly virus.

star 7.91
2,741 votes
Black Rain

#3 - Black Rain

Season 1 - Episode 11 - Aired Mar 14, 2014

The Vectors start working together to hunt down the uninfected as the CDC develops a risky cure and a band of assassins from Ilaria secretly infiltrate the base.

star 7.88
2,747 votes
The Reaping

#4 - The Reaping

Season 1 - Episode 12 - Aired Mar 21, 2014

The uninfected are hiding in a secret bunker on the base as the CDC attempt to retrieve the canisters with the virus and the cure while the Ilaria assassins capture Hatake and force him to chose between which one of his children they will kill first.

star 7.84
2,625 votes
Directors: Brad Turner
Writers: Adam Lash, Cori Uchida
Single Strand

#5 - Single Strand

Season 1 - Episode 4 - Aired Jan 24, 2014

As Alan risks killing Peter in a desperate effort to cure him, Walker teams with a mysterious young researcher to survive their quarantine. Jordan discovers her Rapid Response test is flawed.

star 7.84
3,352 votes
Directors: Duane Clark
Survivor Zero

#6 - Survivor Zero

Season 1 - Episode 7 - Aired Feb 14, 2014

As Ilaria CEO Constance Sutton arrives to collect the virus and its cure, Alan finds Walker seemingly symptom-free. Daniel learns the truth about his “adoption” by Hatake.

star 7.83
2,922 votes
Directors: Mike Rohl

#7 - Bloodline

Season 1 - Episode 8 - Aired Feb 21, 2014

Alan risks his life to save his brother Peter from Ilaria CEO Constance Sutton, only to see him re-captured by Vectors. Julia Walker deals with the mystery of her “cure” while her half-brother Daniel confronts their father, Dr. Hatake, about being abducted as a child.

star 7.82
2,891 votes

#8 - 274

Season 1 - Episode 3 - Aired Jan 17, 2014

As Alan sets up an isolation unit to quarantine the infected lab workers, Walker and Jordan each face the possibility that they have the deadly virus, too.

star 7.80
3,687 votes

#9 - Aniqatiga

Season 1 - Episode 6 - Aired Feb 7, 2014

After Daniel leaves Balleseros to die, the mystery surrounding his connection to Hatake (Hiroyuki Sanada) is revealed. As he works to save Peter (Neil Napier), Alan (Billy Campbell) struggles with his feelings for both Walker (Kyra Zagorsky) and Jordan (Jordan Hayes).

star 7.80
3,185 votes
Directors: Mike Rohl
Dans L'Ombre

#10 - Dans L'Ombre

Season 1 - Episode 13 - Aired Mar 28, 2014

Alan and Peter capture the assassin Scythe and demand to know the whereabouts of Julia’s mother. Balleseros confronts Hatake about the missing Inuit children, while Anana and her brother learn of Daniel’s fate. Concerns that the virus is in Ilaria’s possession again forces Alan and the team off the base to search the world in order to retrieve it.

star 7.79
2,620 votes
Directors: Brad Turner

#11 - Pilot

Season 1 - Episode 1 - Aired Jan 10, 2014

A Center for Disease Control medical team’s investigation of a disease outbreak at a high tech arctic research lab uncovers the truth about a secretive research project that could threaten the future of humankind.

star 7.74
4,569 votes
Directors: David Slade
Writers: Cameron Porsandeh, Ronald D. Moore
O Brave New World

#12 - O Brave New World

Season 2 - Episode 13 - Aired Apr 10, 2015

Alan's relationship with Walker reaches a bloody climax, while his sibling feud with Peter erupts in flames. Elsewhere, Kyle does his best to protect a possible cure for the mycosis.

star 7.70
1,184 votes
The White Room

#13 - The White Room

Season 1 - Episode 5 - Aired Jan 31, 2014

As Alan’s controversial cure leaves Peter clinging to life, the unchecked virus forces Jordan to make a devastating decision. Walker discovers the surprising truth about her new ally, while Daniel squares off against Balleseros.

star 7.70
3,126 votes
Directors: Duane Clark
Writers: Cameron Porsandeh, Ronald D. Moore

#14 - Vector

Season 1 - Episode 2 - Aired Jan 10, 2014

As Dr. Alan Farragut accelerates the hunt for his infected brother Peter, the quarantine of three scientists threatens to create panic at the lab. Doreen finds evidence that Dr. Hatake is lying about his research.

star 7.63
2,447 votes
Directors: Brad Turner
Writers: Cameron Porsandeh, Ronald D. Moore
Vade in Pace

#15 - Vade in Pace

Season 2 - Episode 8 - Aired Mar 6, 2015

As the CDC team reels from the devastation at the Abbey, the Coast Guard arrives with news of a new outbreak. Meanwhile, incensed from her imprisonment, Amy takes control of the Abbey, locking Michael in the pit. Jordan, convinced her baby still lives, reveals the truth of the immortals to Kyle in exchange for his help. In the future, Walker's quest for Hatake's missing sword causes her to delve deeper into the Abbey's secrets

star 7.57
1,358 votes
Plan B

#16 - Plan B

Season 2 - Episode 11 - Aired Mar 27, 2015

Plan B are determined to make sure that the virus and the infected people do not leave the island.

star 7.48
1,265 votes

#17 - Scion

Season 2 - Episode 3 - Aired Jan 30, 2015

Peter and Jordan leave the safety of the Abbey to retrieve some specimens and discover just what’s living in the woods, meanwhile Sister Amy plots to make them leave forever.

star 7.47
1,492 votes
Writers: Allison Miller (IX)

#18 - Densho

Season 2 - Episode 4 - Aired Feb 6, 2015

As Michael struggles to keep the abbey under control, the CDC team moves closer toward tracking the source of the pathogen. Alan fights the urge to rejoin his team and confronts the reality about Peter’s allegiances. In the future, Walker makes a desperate attempt to escape from her delusional father, with potentially deadly consequences.

star 7.46
1,354 votes
The Ascendant

#19 - The Ascendant

Season 2 - Episode 12 - Aired Apr 3, 2015

Peter finds his purpose as the new leader of Michael's order as the CDC team continues the desperate search for the Mother Tree.

star 7.45
1,267 votes

#20 - Oubliette

Season 2 - Episode 5 - Aired Feb 13, 2015

Michael locks Peter and Alan in a pit. Alan escapes and discovers that Kyle has a secret of his own. Agnes reveals a shocking truth to Michael, who drastically turns on her for doubting him. In the future, Caleb uncovers Walker's deception and takes matters into his own hands.

star 7.44
1,352 votes
Directors: Grant Harvey

#21 - Mother

Season 2 - Episode 10 - Aired Mar 20, 2015

The Abbey becomes a house of horrors as Kyle struggles with his infection and Anne begins to shape a successor to Michael.

star 7.43
1,302 votes

#22 - Reunion

Season 2 - Episode 2 - Aired Jan 23, 2015

The CDC team continue to investigate the island; at the same time, they discover Peter's brother, Alan, is a member of Brother Michael's cult, and his warnings for them to leave the abbey fall on deaf ears.

star 7.40
1,644 votes
Directors: Steven Adelson
Writers: Timothy J. Lea
San Jose

#23 - San Jose

Season 2 - Episode 1 - Aired Jan 16, 2015

15 months after the events at Arctic Biosystems, new CDC team with the addition of biotoxicologist Kyle Sommer respond to a potential outbreak on a Windjammer in the Northern Pacific. Their search leads them to an island occupied by a mysterious cult led by the charismatic Michael. Meanwhile, 30 years in the future, Walker arrives at the same island searching for Alan Farragut.

star 7.39
1,627 votes
Directors: Steven Adelson
Writers: Steven Maeda
M. Domestica

#24 - M. Domestica

Season 2 - Episode 6 - Aired Feb 20, 2015

Amy creates an outbreak of the disease. Michael torments Peter in the pit. Alan, Jordan and Kyle discover the truth about the Abbey's food chain. An uprising at the Abbey threatens the safety of the uninfected. In present-day Paris, Balleseros meet an unlikely immortal.

star 7.38
1,295 votes
Directors: Grant Harvey

#25 - Cross-Pollination

Season 2 - Episode 7 - Aired Feb 27, 2015

As Peter gains a new cellmate, Michael takes extreme action when his followers begin to mutiny.

star 7.36
1,222 votes