that was very odd. >> something else was odd. roger had been calling lynn at home throughout the day. no answer. late that afternoon, he came home from work with tristan, and it was all too clear why lynn hadn't answered the phone. >> 9-1-1. >> oh, i just got home. my wife is dead. >> lynn armstrong reister, mother, soldier, beloved commander, was in her bedroom, lying dead in a pool of blood. >> coming up, where will investigators start? >> it could be a neighboring, it could be --, could be anybody. >> we have a killer on the loose. >> yes, he's out there. >> when dateline continues. roger reister, and his little but with my moderate- to-severe eczema, it can be tough. my skin was so uncomfortable. the itching was so bad.