Night clubgoers just went out to have a good time in New York City, then woke up confused and in strange places, finding themselves in cold back seats or on cold floors – or they weren't waking up at all. Now, the families of three of the slain victims – Katie Gallagher, Julio Ramirez and John Umberger – are sharing their stories and looking back on the investigations in interviews with ABC News' "Nightline." Gallagher, a 35-year-old fashion designer, died last July after she was allegedly drugged outside her apartment in what police say was an attempted robbery.