In this gripping episode of Mystery Unsolved, we delve into the perplexing and tragic case of Frauke Liebs, a 21-year-old student nurse who vanished without a trace in Paderborn, Germany, in 2006. What began as an ordinary evening out with friends quickly turned into a haunting mystery that has baffled investigators for years.

Join us as we retrace Frauke's last known steps, exploring the chilling phone calls she made to her friends and family in the days following her disappearance. Despite her calm demeanor during these calls, something was clearly very wrong. What secrets do these cryptic conversations hold?