“Shutter Island” scribe Dennis Lehane has picked a thriller by Attica Locke as the first book for his own imprint at HarperCollins. The Associated Press reports that Locke’s second novel, ‘‘The Cutting Season,’’ will be published Sept. 18. The book is set in Louisiana and centers on the discovery of a dead body on a plantation. Her debut novel, ‘‘Black Water Rising,’’ was a finalist in 2010 for an Edgar Award, which is given for crime and mystery novels. Lehane, whose other novels include ‘‘Mystic River” and ‘‘Moonlight Mile,” created Dennis Lehane Books in 2011.