Zoo is an American drama television series based on the 2012 novel of the same name by James Patterson and Michael Ledwidge, the former also serving as an executive producer for the series, which stars James Wolk, Kristen Connolly, Nonso Anozie, Nora Arnezeder and Billy Burke as a group of varied professionals who investigate a mysterious outbreak of violent animal attacks upon humans all over the world. Zoo premiered on June 30, 2015, on CBS. CBS renewed the series for a third season in August 2016, which aired between June 29 and September 21, 2017. On October 23, 2017, CBS announced the series had been cancelled after three seasons.