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The Worst Episodes of Zoo

Every episode of Zoo ranked from worst to best. Explore the Worst Episodes of Zoo!

Set amidst a wave of violent animal attacks sweeping across the planet, a young renegade scientist is thrust into a race to unlock the mystery...
Genre:Drama
Network:CBS

Lowest Rated Episodes Summary

"The Barrier" is the worst rated episode of "Zoo". It scored 5.8/10 based on 400 votes. Directed by Michael Katleman and written by Bryan Oh, Nick Parker, it aired on 9/21/2017. This episode scored 0.8 points lower than the second lowest rated, "West Side Story".

  • The Barrier
    5.8/10400 votes
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    #1 - The Barrier

    Season 3 Episode 13 - Aired 9/21/2017

    The team races to stop the hybrids from breaching the barrier wall by shutting down the last beacon that draws them in.

    Director: Michael Katleman

    Writer: Bryan Oh, Nick Parker

  • West Side Story
    6.6/10318 votes
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    #2 - West Side Story

    Season 3 Episode 12 - Aired 9/14/2017

    After the team’s plane suffers a catastrophic accident in the hybrid zone, Dariela and Tessa set out on a rescue mission to save them.

    Director: Gary Fleder

    Writer: Geoffrey Tock, Gregory Weidman

  • Oz Is Oz
    6.8/10316 votes
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    #3 - Oz Is Oz

    Season 3 Episode 6 - Aired 8/3/2017

    Mitch seeks to rescue Clementine from her captors, and a glimpse into Jackson’s sister Abigail’s past reveals the origins of the hybrids.

    Director: Michael Katleman

    Writer: Matt Pitts

  • Wham, Bam, Thank You Sam
    6.8/10307 votes
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    #4 - Wham, Bam, Thank You Sam

    Season 3 Episode 7 - Aired 8/10/2017

    The team sets out on a rescue mission for Abe and Dariela’s son, Isaac. Then, in search of information on a new hybrid, Mitch and Jamie travel to California, where they cross paths with a familiar face from their past.

    Director: Alexander H. Gayner

    Writer: Jay Faerber, Shintaro Shimosawa

  • Stakes on a Plane
    6.8/10308 votes
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    #5 - Stakes on a Plane

    Season 3 Episode 8 - Aired 8/17/2017

    Abigail holds Jackson prisoner in order to extract information from him that is critical to her secret master plan, and the team faces a mid-air crisis when their plane experiences an electrical malfunction

    Director: Jet Wilkinson

    Writer: Geoffrey Tock, Gregory Weidman

  • The Black Forest
    6.8/10302 votes
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    #6 - The Black Forest

    Season 3 Episode 9 - Aired 8/24/2017

    After Mitch’s alter ego, Mr. Duncan, attacks the team’s plane then flees, Jamie, Abe and Max set out to find him and help.

    Director: David Barrett

    Writer: Bryan Oh, Nick Parker

  • Ten Years Gone
    6.9/10337 votes
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    #7 - Ten Years Gone

    Season 3 Episode 3 - Aired 7/13/2017

    Abraham and Dariela consider making a deal with Reiden Global for personal reasons, and Jamie and Clementine perform a risky surgery on Mitch.

    Director: Edward Ornelas

    Writer: Shintaro Shimosawa, Jay Faerber

  • Welcome to the Terra Dome
    6.9/10328 votes
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    #8 - Welcome to the Terra Dome

    Season 3 Episode 4 - Aired 7/20/2017

    Abraham and Dariela reunite with the team as they try and stop the hybrids from taking over New York City.

    Director: Greg Beeman

    Writer: Geoffrey Tock, Gregory Weidman

  • Once Upon a Time in the Nest
    6.9/10300 votes
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    #9 - Once Upon a Time in the Nest

    Season 3 Episode 10 - Aired 8/31/2017

    After Jackson attacks Abigail, the team rushes to save her as her life hangs in the balance.

    Director: Avi Youabian

    Writer: Shintaro Shimosawa, Jay Faerber

  • Cradles and Graves
    6.9/10306 votes
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    #10 - Cradles and Graves

    Season 3 Episode 11 - Aired 9/7/2017

    As the team is trapped inside the plane by toxic spores surrounding them, complications arise during the delivery of Clementine’s baby.

    Director: Jennifer Lynch

    Writer: Nicole Phillips, Melissa Glenn

  • No Place Like Home
    7.0/10449 votes
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    #11 - No Place Like Home

    Season 3 Episode 1 - Aired 6/29/2017

    Ten years after the animals were cured but at the cost of sterilizing the human population, a new threat rises in the form of “the hybrids,” an army of unstoppable lab-made creatures focused on destroying mankind.

    Director: Michael Katleman

    Writer: Nicole Phillips, Melissa Glenn

  • Diaspora
    7.0/10365 votes
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    #12 - Diaspora

    Season 3 Episode 2 - Aired 7/6/2017

    Jackson and Logan discover a link between the hybrid attacks that occur in Portland and New York; Mitch is interrogated by a woman claiming to be his daughter, Clementine; and a new development in Abraham’s research into the sterility crisis endangers his family.

    Director: Michael Katleman

    Writer: Bryan Oh, Nick Parker

  • Drop It Like It’s Hot
    7.0/10320 votes
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    #13 - Drop It Like It’s Hot

    Season 3 Episode 5 - Aired 7/27/2017

    While Jamie’s under arrest, she manages to manipulate Mitch and Logan into helping her hunt shepherds, members of a secretive group responsible for sterilizing humans

    Director: Norman Buckley

    Writer: Nicole Phillips, Melissa Glenn

  • First Blood
    7.3/101,053 votes
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    #14 - First Blood

    Season 1 Episode 1 - Aired 6/30/2015

    In Botswana, guides Jackson Oz and Abraham Kenyatta come across a mysterious series of lion attacks. In LA, two lions escape a zoo and go on a rampage, and investigative reporter Jamie Campbell believes that it's tied to pesticide infested food sold by Reiden Global.

    Director: Brad Anderson

    Writer: N/A

  • Fight or Flight
    7.3/10826 votes
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    #15 - Fight or Flight

    Season 1 Episode 2 - Aired 7/7/2015

    Jackson discovers that Abraham is alive and stages a daring rescue to bring his friend home safely. Meanwhile, Jamie suspects that Reiden Global's pesticide is responsible for the lion attacks and convinces Mitch to help her. In Paris, a mysterious man approaches Chloe and asks her to accompany him.

    Director: Michael Katleman

    Writer: Jeff Pinkner, Scott Rosenberg

  • The Silence of the Cicadas
    7.3/10743 votes
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    #16 - The Silence of the Cicadas

    Season 1 Episode 3 - Aired 7/14/2015

    Jackson and Abraham travel to Robert's isolated lab to recover his research. Meanwhile, Jamie convinces Mitch to go to New Orleans with her to approach a sympathetic senator, and Gaspald convinces Chloe to join forces with him.

    Director: Chris Long

    Writer: Denitria Harris-Lawrence

  • Pack Mentality
    7.3/10703 votes
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    #17 - Pack Mentality

    Season 1 Episode 4 - Aired 7/21/2015

    Jackson, Jamie, and Chloe travel to Mississippi to investigate the prison fire, while Abraham and Mitch go north to trap and study wolves.

    Director: David Grossman

    Writer: Bryan Oh

  • Blame It on Leo
    7.3/10660 votes
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    #18 - Blame It on Leo

    Season 1 Episode 5 - Aired 7/28/2015

    Jackson, Jamie and Agent Shaffer search for a chemist in Alabama who has evidence of Reiden Global's role in the growing animal problem. Meanwhile, Chloe, Mitch and Abraham fly to Rio de Janeiro to delay the local government's plan for a massive bat extermination and come up against a ruthless drug lord.

    Director: Steven A. Adelson

    Writer: Jay Faerber

  • This Is What It Sounds Like
    7.3/10617 votes
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    #19 - This Is What It Sounds Like

    Season 1 Episode 6 - Aired 8/4/2015

    Abraham works to save Chloe and Mitch from a drug lord; Jackson and Jamie continue to work with Agent Shaffer in search of Evan Lee Hartley and the Mother Cell after Leo is killed in the crash.

    Director: David Solomon

    Writer: Carla Kettner

  • Emotional Contagion
    7.3/10580 votes
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    #20 - Emotional Contagion

    Season 1 Episode 10 - Aired 9/1/2015

    On the run as fugitives, the team flies to Zambia to gather leopard DNA in order to manufacture a cure for the abnormal behavior that's affecting animals worldwide. When it’s time to leave, they need to reach out to animal rights activist Ray Endicott to get safe passage out of the country. Also, Chloe makes the ultimate sacrifice to avoid further bloodshed.

    Director: Christine Moore

    Writer: Jay Faerber

  • Collision Point
    7.3/10455 votes
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    #21 - Collision Point

    Season 2 Episode 3 - Aired 7/5/2016

    A tragedy strikes the team's only ally within the government, leaving Jackson and the team on their own to stop a surge of animal-related attacks from destroying the city of Geneva, Switzerland. Meanwhile, Dariela discovers something shocking about General Davies; and in the Canadian wilderness, Jamie comes across a troubling detail about Logan.

    Director: Steven A. Adelson

    Writer: Rebekah F. Smith, Jay Faerber

  • Jamie's Got a Gun
    7.3/10404 votes
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    #22 - Jamie's Got a Gun

    Season 2 Episode 7 - Aired 8/2/2016

    Mitch digs into Jackson’s past to get the answers they need to make the cure. Also, the rest of the team hunts for evidence related to the triple helix inside a quaint English town.

    Director: Lee Rose

    Writer: Rebekah F. Smith, Melissa Glenn

  • Sleuths
    7.4/10603 votes
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    #23 - Sleuths

    Season 1 Episode 7 - Aired 8/11/2015

    The team heads to Paris to investigate a group of bears whose trackers have gone offline. Mitch makes a shocking new discovery about the Mother Cell. Chloe runs into her ex-fiancé.

    Director: Dean White

    Writer: Denitria Harris-Lawrence

  • The Cheese Stands Alone
    7.4/10606 votes
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    #24 - The Cheese Stands Alone

    Season 1 Episode 8 - Aired 8/18/2015

    The team discovers a terrifying rat infestation when a cargo ship carrying the bloodthirsty rodents washes up off the coast of Massachusetts. Also, unbeknownst to the rest of the team, Mitch reconnects with his terminally ill daughter in Boston as he prepares to make a trade with Reiden-Global to save her life.

    Director: Eric Laneuville

    Writer: Jay Faerber, Scott Rosenberg

  • Murmuration
    7.4/10586 votes
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    #25 - Murmuration

    Season 1 Episode 9 - Aired 8/25/2015

    Jamie contacts a fellow journalist in an attempt to expose the truth about Reiden’s involvement in the global animal problem. After realizing Delavenne works for Reiden, Mitch escapes with both the Mother Cell and his daughter’s medication. However, on their way to deliver the medication, Mitch and Abraham come face-to-face with a terrifying army of birds.

    Director: Michael Katleman

    Writer: Bryan Oh