<Tr> <Th_colspan="2"> External links </Th> </Tr> <Tr> <Td_colspan="2"> Website </Td> </Tr> <P> The Leftovers is an American drama television series created by Damon Lindelof and Tom Perrotta, that aired on HBO from June 29, 2014, to June 4, 2017 . It is based on Perrotta's novel of the same name . The pilot was written by Lindelof and Perrotta, and directed by Peter Berg . The series stars an ensemble cast featuring Justin Theroux, Amy Brenneman, Christopher Eccleston, Liv Tyler, Chris Zylka, Margaret Qualley, Carrie Coon, Ann Dowd, Regina King, Jovan Adepo, Kevin Carroll, Janel Moloney, and Scott Glenn . The series was renewed for a second season, which premiered on October 4, 2015, and concluded December 6, 2015 . On December 10, 2015, HBO renewed the show for a third and final season, which premiered on April 16, 2017 and concluded on June 4, 2017 . </P> <P> The Leftovers starts three years after a global event called the "Sudden Departure", the inexplicable, simultaneous disappearance of 140 million people, 2% of the world's population, on October 14, 2011 . Following that event, mainstream religions declined, and a number of cults emerged, most notably the Guilty Remnant . </P>

How many seasons are there of the leftovers