suspects, up until the point that they were eliminated. >> a year of dna tests and not a single match. it was enough to wear any detective down, even one as passionate as lindsey wade. she had given her best. but now, she'd made a tough decision. >> it was time for me to move on. >> in the spring of 2018, lindsey wade retired from the tacoma pd. >> working on cold cases is, typically, more frustrating than rewarding. because you can work and work and work and work, and do a ton of investigation. and come up with zero. >> and then, walk away? >> yeah. >> she had investigated both jenni and michella's cases for years. and saying good-bye wasn't easy. especially, to jenni's mom. by that time, had you grown pretty close to pattie? >> uh-huh. yeah. >> she is a very special gal. i told her mother, i'm going to