Norma Patricia Esparza, assistant professor of psychology and clinical psychologist at Webster University in Geneva, flew into Boston on Oct. 19, 2012, for a brief layover. She was on her way to St. Louis, where she would be attending a meeting of faculty from all of the school’s far-flung campuses. But Esparza never made it to St. Louis. Shortly after her plane landed at 8:30 p.m. at Logan International Airport, she was approached by police, placed in handcuffs, and booked for the 1995 murder of 24-year-old Gonzalo Ramirez. He’d been beaten and hacked to death with a meat cleaver.