Without a Trace

In this episode of Strange Matters, three cases are presented in which someone suddenly vanished without a trace.  In each of these unsolved mysteries, the victims would be going about living normal lives, until the next moment they were simply gone, forever.
Danielle Imbo and Richard Petrone were hanging at a bar late one night with some friends. At around midnight, the pair left the bar to head towards Richard's truck. Neither of them would ever be seen again.  This case has puzzled police and the community for over a decade, as no one can see how its possible for two people and a truck could simply go missing without a shred of evidence.
Angela Hammond was on a payphone late at night, talking to her fiance Rob. Suddenly, she screamed into the phone.  Her fiance ran to his car and raced towards to where she was, when a truck passed by with a woman inside screaming his name.  Unfortunately, Rob could not catch up and the truck would drive away, apparently taking Angela with it.  No si