Means and OpportunityA few months ago Dan Bingham was a respected Washington, D.C., newspaper reporter. Now, he’s on the run. His life changed overnight when he was assigned to write an article on death row inmates. To his shock and surprise, one of those he’d interview - an unrepentant serial killer - would turn out to be his childhood friend, Frank Sharp.After Sharp’s execution, the prosecution’s main witness in Sharp’s murder trial is killed. At first police considered the young woman’s murder to be an unfortunate coincidence, but then they find a piece of evidence that only the executed killer could possibly have known about. Following the witnesses’ death, other related murders take place, with each bearing the same M.O., each having something to do with Frank Sharp.Detective Mike Castillo, who had originally arrested Sharp and testified at his trial, is assigned the lead in the investigation. Castillo’s investigation homes in on one person: Sharp’s former friend, Dan Bingham. The detective believes that Bingham is the only one who might know those that Sharp wanted killed.Despite his protestations of innocence, Bingham, when questioned by the police, cannot provide an alibi for the times the murders were committed. He has become the prime suspect. He decides to embark on his own investigation since the police are so convinced of his guilt that they aren’t looking at anyone else.As Castillo tells Bingham’s attorney, "We don’t usually continue an investigation once we find the murderer."