Potboiler's Puzzle

The great mystery writer, W. A. Potboiler has died! In his will, he left instructions that whoever can solve his final mystery puzzle will inherit his entire estate, worth over $5,000,000. Many have tried, but so far no one has been able to decipher the clues. The deadline to solve the mystery is approaching. If no one comes up with the answers soon, the $5,000,000 will be used to create a retirement home for destitute mystery writers. Now is your chance to solve the puzzle and get the cash, before it is too late!