sandoval at this very moment? where was his vehicle? and where oh where was tina? says, brad, you've gotta come over here and see this. >> john sandoval's car with disturbing evidence inside. the hunt is on. >> i said, step aside, we're coming in. we burst through the door, and in the bedroom, and the windows open and the drapes were flapping. so, john bailed out the window. >> when dateline continues. for the chance at clear or almost clear skin. it's like the feeling of finding your back... is back. or finding psoriasis can't deny the splendor of these thighs. once-daily sotyktu is proven to get more people clearer skin than the leading pill. don't take if you're allergic to sotyktu; serious reactions can occur. sotyktu can lower your ability to fight infections including tb. serious infections, cancers including lymphoma, muscle problems, and changes in certain labs have occurred. tell your doctor if you have an infection, liver or kidney problems, high triglycerides, or had a vaccine or plan to. sotyktu is a tyk2 inhibitor. tyk2 is part of the jak family. it's

sandoval comes out for a hearing. saying do not release him! not this time, not ever! >> if tina was sitting here, don't we wish that she were. what would you tell are about all those years? >> i would tell her that i love her. and that we try the hardest. and that we are going to keep trying. justice is not wholly served yet. keep pushing. e. why would a father drop off his daughter and disappear? >>> i'm craig melvin, and this is dateline! >> he loved his daughter. his daughter was his life. >> it was a puzzle for police. why would a father drop off his daughter and disappear? >> i knew something was not right. >> then they found it. the diary that he recorded in secret. >> this whole thing is just getting absurd. >> and the clues came pouring out. blind, in the bushes. >> this was the hot spot? this was the crime scene? >> a stunner of a surveillance team. >> charles, rob. >> anything you might need for a murder! >> exactly. >> and what may just be. the most sinister mother daughter conversation that you have ever overheard. >> it's already in motion, you need to do your part.