were, and she had identified roger brumback, a doctor at creighton university and was enjoyed within the pathology department. so now we have a second victim from the same office, in the same specific pathology training program that we had in the 2008 case. >> dr. brumback would have been a colleague of dr. hunter. >> yes. >> no question they would have known each other. >> no question. >> so tell me as an investigator what you're thinking then? >> well, it meant, specifically, if we see these similarities, obviously, we have to follow that. and that was going to lead us to creighton university medical center. so detectives immediately started getting subpoenas prepared to start looking at all the students that had been through that training program, the professors, and staff. >> it had been more than five years since the killings in dund dundee, but the creighton connection was lost on no one,

roger brumback was head of the pathology department at creighton university. >> i recognized that nameand the fact that it was another pathologist from creighton killed with a knife, i automatically assumed it was related. >> roger brumback wasn't any pathologist. he was head of the department. he and mary brumback were both 65. in researching their final hours, reporter todd cooper learned the couple had been last been heard from at about 2:00 p.m. on mother's day. >> one of the first things we found out about was the face time conversation between both brumbacks and their daughter and they are roaring with laughter at one point, so much that the daughter took a screen shot of the conversation. that's the kind of stuff that humanizes this, that makes it -- you realize that this was just a lightning bolt in the middle of an otherwise normal mother's day. >> carol brumback, roger's sister, also spoke with her brother that afternoon. then two days later, a family member broke the awful news. >> well, he said, roger and mary were murdered. and i said, i said, what are you talking about? h