PUZZLE OF DEATH by D.B. SILVIS

Dr. Fredrick Rhineman was a brilliant, wealthy and famous chemist. He was also sinister and vengeful. His instructions, to his secretary, were upon his death that sixteen people would each receive a letter containing a piece of a puzzle, he had constructed. When assembled the puzzle pieces would reveal the location of ten million dollar in cash, and a highly lethal chemical formula which could give world dominance to a rogue country. Detective Jake Wayde is one of the sixteen to receive a letter containing a puzzle piece, but he doesn’t know why. The ugly heads of Hate, Power, Domination and Greed rear up in those receiving a piece of the, soon to be, deadly puzzle.
Which of the twelve people the doctor abhorred and which of the fours ambassadors, of foreign countries, who received a piece of the puzzle, will die a brutal death? Who survives the malice Dr. Rhineman envisioned?