Letters in the Pines (A Detective Riley Quinn Pine Brooke Mystery #5)
A.J. Rivers

a note filled with peculiar riddles arranged like a crossword,
she launches an investigation against her peer’s advice.
Some believe that it’s a prank, but Riley is convinced it holds vital clues to a murderous case.
Although every clue and attempt to solve the puzzle initially leads her to dead end,
Detective Riley Quinn perseveres against all odds.
With enough time, she follows the puzzle's clues to a famous site.
An infamous construction area once destined for a huge mansion and elaborate grounds,
until money ran out and it was abandoned.
While exploring the deserted yet lavish entertaining area in the backyard,
Riley stumbles upon a strange area that changes the entire trajectory of her case.
Bloody trails, deadly codes, secret letters, and a twisted game that seems to have no end in sight.
Play sickening games, pay the eternal judgement.