A mysterious music puzzle. A murdered co-ed. Sinister secrets. Three years ago, Scott Drayco left the FBI after an incident involving his partner, Mark "Sarg" Sargosian. Now a freelance crime consultant, Drayco often helps law enforcement on cases, but he never imagined his estranged former partner would turn up on his doorstep, pleading for Drayco's help. A student at an elite Washington,...