>> during larry's trial, his twin brother, gary, tried to provide him an alibi, still, federal prosecutor larry beaumont, got hall convicted of kidnapping jessica roach. >> in the federal system, if you're guilty of a kidnapping and that kidnapping resulted in a death, under the sentencing guidelines it's a mandatory life term. >> the jessica roach case was over. but the disappearance of tricia reitler remained unsolved. and her parents, garry reitler and donna, could not stop looking. >> we walked the sides of the roads. the riverbeds. we looked under the culverts. we went to crack houses because somebody had a lead. >> if you see something on the side of the road, a garbage bag, whatever, it's like -- could that be her? >> it was such a horrendous crime to lose your daughter and never find out what the heck happened to her. >> larry beaumont kept looking too. >> i actually made arrangements on a couple of occasions to go out and look for the body. >> beaumont called in specialized military and law