<Tr> <Th> Media type </Th> <Td> Print (hardcover and paperback), audiobook, e-book </Td> </Tr> <Tr> <Th> No. of books </Th> <Td> </Td> </Tr> <P> The 5th Wave is a trilogy of young adult post-apocalyptic sci - fi novels written by American author Rick Yancey . The series started in May 2013 with the first book, The 5th Wave . A sequel titled The Infinite Sea was published in 2014 . The trilogy concluded in 2016 with the final book, The Last Star . </P> <P> Earth is systematically attacked by a group of aliens known as "the Others". They exist in unknown form, and attack through a series of waves . After the first four waves have decimated the human population, the remaining populace is terrifyingly awaiting the arrival a new Fifth Wave, one that will supposedly wipe the human race clean off the planet . The story follows a group of children as they try to find their way through a world that is slowly reverting to the Stone Age . </P>

What is the first book of the 5th wave series