Profiling con artist and self-professed German heiress Anna Sorokin.

An Ivy League student vanishes just after the New Year.

A sorority girl goes missing after getting into a ride share.

A man goes missing after a woman is found dead in his bed.

A social media star is murdered and her boyfriend posts photos online.

A pre-wedding trip to Las Vegas devolves into a murder.

A woman was shot dead while out walking the dogs in Indianapolis.

Well-liked loan officer Connie Boelter is found dead in her apartment.

A man goes missing while on a hike in China and his family fears foul play.

A wealthy man vanishes after being charged with murdering his wife.

A family camping trip turned tragic when 2-year-old DeOrr Kunz vanished.

A teen boy disappears after visiting his father on a court-ordered visit.

A woman who had top military security clearance is found dead at home.

The family of college student fights to get answers how their son died.

A woman's death is ruled a suicide but her family suspects foul play.

17-year-old Tiffaney Wilson and her infant daughter disappear into thin air after a trip to take pictures with Santa. When another local woman is brutally attacked, and others go missing, police suspect that a serial killer is stalking women.