A Deadly Row — Casey Mayes

Savannah Stone has always been a math whiz. So it's only natural that she makes a living creating puzzles that can test any puzzler's mind...

Savannah is happily churning out some tricky puzzles in the rural beauty of North Carolina when a call comes for her husband, Zach -- a retired police chief who now does consulting work. The Charlotte police need his help, and Savannah goes along for the ride -- to support her loving hubby.

Mayor Grady Winslow has been receiving sinister threats from a killer. The clues show that Winslow is intended to be the next victim in a twisted game. Savannah gets bumped from supporting role to key player as this is one puzzle she might be able to solve -- before the next box to be filled is the mayor's coffin...