Season 1 of Zoo premiered on June 30, 2015, on CBS and concluded on September 15, 2015. The TV Series is based on the novels of the same name by James Patterson and Michael Ledwidge. It was developed for television by Josh Appelbaum, also including André Nemec, Jeff Pinkner, Scott Rosenberg
In Botswana, the American zoologist Jackson Oz rescues Chloe Tousignant from a lion attack. She seems to be a tourist from Paris but is in reality working as an intelligence analyst at the French Defense Department. Jackson's late father Robert was collecting evidence for an upcoming rise of the animals against mankind. At the Los Angeles Zoo, a lion keeper is attacked. Journalist Jamie Campbell is convinced this is caused by new food that was contaminated with pesticides from Reiden Global, a biotechnology company, and starts to investigate together with veterinary pathologist Mitch Morgan. Even ordinary pet cats behave strangely.