Before her Wall Street dream is again within her grasp, Cynthia Jakubek will come to appreciate Robert F. Kennedy's memorable advice: ''Forgive your enemies--but remember their names.''Eight colonists were killed at the original Battle of Lexington, but just before Thanksgiving, at the Pittsburgh Museum of American History, the life-sized diorama of that battle has nine bodies.The ninth is a murder victim, Thomas Bradshaw, a prominent Pittsburgh connoisseur, and Cynthia Jakubek will be drawn into one of the sideshows surrounding the investigation.Jakubek is a working-class gal who's about to jump from Main Street to Wall Street on the strength of her Harvard Law School degree -- and marry a budding novelist as well -- when the big recession in the fall of 2008 puts her dream on hold.