cause eventually. >> she'd been gone a week when the sheriff asked detectives keith matz to look into it. that takes a message, something off, said her family. >> this doesn't sound like marie. >> so when you got that one, the antenna must have gone up? >> the antennas did go up. >> detective nesli suhi-moore didn't hear about the case then. because -- on maternity leave. >> correct. and i came back two weeks after she was initially reported missing. >> and that's when nesli heard from other detectives about the case keith was working on. >> poor keith. had no idea that i was going to come bully my way into the investigation. >> and why did you want to bully your way into the investigation? >> i think the connection of just having a child. i just knew that she didn't leave on her own. >> so here they were, partners. the young detective who happen to be a brand-new mother, and the veteran who had seen just about everything.