The Poisoned Chalice: The Fall, Book Four

"One simple act, and the troubles of the United Federation of Planets have grown darker overnight. The mystery behind the heinous terrorist attack that has rocked the Federation to its core grows ever deeper, and William Riker finds himself beset by rumors and half-truths as the U.S.S. Titan is ordered back to Earth on emergency orders from the admiralty. Soon, Riker finds himself drawn into a game of political intrigue, bearing witness to members of Starfleet being detained--including people he considered friends--pending an investigation at the highest levels"--Page 4 of cover.