>> i didn't wreck it. >> reporter: brian hughes, trish's husband, an experienced 31 year old mechanic commune suffered an unimaginable accident. as emily tells it, brian was visiting family in south dakota. >> one day he called and he spoke to lou for a little while and then he asked to speak to his daughter, who was still in wichita. and the story goes that he told her goodbye. >> reporter: told his daughter goodbye? >> right. and then, a couple hours later, we got the call that he had been crushed underneath a car that he was fixing. >> reporter: brian was dead. really? that didn't make any sense to emily. >> he would have put blocks under the tires. >> reporter: he knew his way around a vehicle? >> right. >> reporter: and then, he was dead? >> yeah. >> reporter: the bodies were piling up, five now. but none of the findings in any of the cases, including brian's, concluded there was foul play. >> it was classified, and still is classified, as an accident. >> reporter: detective goodwyn decided he was going to have to find a new angle on the enigma of angels landing and lou castro ev