A Deadly Row

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...