sentences:  By focusing on homicide detectives who committed suicide in a similar fashion and left a one-sentence suicide note quoting the works of Edgar Allan Poe (as Sean's did), Jack finds three clear matches to his brother's death.When the FBI finally realizes that he is on to something and attempts to block him from further access, he is able to trade his knowledge of the other deaths (one of which the FBI had not uncovered) for a role with the FBI investigative team headed by Robert Backus, the son of a famous agent within the bureau who has been overshadowed by his father's legend.Assigned the duty of handling him is agent Rachel Walling, one of Backus' main proteges, and the two of them become personally involved.