“Lightning Strike,” by William Kent Krueger (Atria Books) Lightning Strike (Atria Books) William Kent Krueger wrote a dozen Cork O’Connor mysteries before he turned to stand-alone novels. The second of these, “This Tender Land,” drew rave reviews and was on The New York Times best-seller list for weeks. Now, in “Lightning Strike,” Krueger uses the lyrical writing of his stand-alone books in a Cork O’Connor prequel that is both a series mystery and an independent book — and, most likely, another best-seller. In this latest work, Cork is 12, a happy outdoorsy kid who lives with his father, mother and Ojibwe grandmother.