both days have a window of almost two hours where we do not know where corporal steven caulkins was >> and you know, what's so eerie about this is that unaccounted for a time. we're talking about naples, florida. we're talking about areas where one could essentially go and not have tracks behind them where did he go for the amount of time, but he was unaccounted for when they were just last with this person who was helping, are they endanger? were they endanger? did he, in fact, never have contact again? >> i'm doing more >> nefarious happening here. and that point that he was making about not making a restroom well, i'm being frustrated with the justice system. there is a thought that was he engaging in his own sense of justice? this story on sunday, we'll break it down and take you through the 20 year journey that these families have had to undergo. you will not be able to turn away we're really looking forward to seeing it. and certainly hoping for the answers that these families so deserve. laura coates, thomas lake. thank you to both you be sure to tune in this all new episode of