There are 3 books in the Last Policeman Trilogy series. The newest book is World of Trouble which came out in 2014.

1
The Last Policeman

Book cover of The Last Policeman
In THE LAST POLICEMAN, Edgar Award winner and New York Times bestselling author Ben H. Winters, offers readers something they've never seen before: A police procedural set on the brink of an apocalypse. What's the point in solving murders when we're going to die soon, anyway? Hank Palace, a homicide…
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2
Countdown City

Book cover of Countdown City
Set three months before the deadly asteroid 2011GV1 is due to hit Earth, this Last Policeman sequel chronicles the further adventures of Hank Palace. The Concord Police Department is now operating under the auspices of the U.S. Justice Department, and Hank is out of a job-until he's hired by a…

3
World of Trouble

Book cover of World of Trouble
Critically acclaimed author Ben H. Winters delivers this explosive final installment in the Edgar Award winning Last Policeman series. With the doomsday asteroid looming, Detective Hank Palace has found sanctuary in the woods of New England, secure in a well-stocked safe house with other onetime members of the Concord police…