Elizabeth Vargas

Remember, Elizabeth said she and Yen spent the weekend of the murders together in Washington, D.C. So investigators interview him next.

Remember, Elizabeth said she and Yen spent the weekend of the murders together in Washington, D.C. So investigators interview him next.

Audio tapes from that first police interview with Jens reveal a confident college freshman fending off suspicion, telling investigators he's the son of a German diplomat.

Audio tapes from that first police interview with Jens reveal a confident college freshman fending off suspicion, telling investigators he's the son of a German diplomat.

As investigators wait to meet with Yens, the phone rings, but it's not who they expect.

As investigators wait to meet with Yens, the phone rings, but it's not who they expect.

Next.

Next.

It has been six months since the heinous double murder of Derek and Nancy Hasem rocked the rural community of Bedford County, Virginia. There have been no arrests, but the Hasem's youngest daughter, Elizabeth Hasem, and her German boyfriend, Jens Ziering, are under suspicion. With limited evidence, police are left to wait for Jens to voluntarily give his fingerprints and blood.

It has been six months since the heinous double murder of Derek and Nancy Hasem rocked the rural community of Bedford County, Virginia. There have been no arrests, but the Hasem's youngest daughter, Elizabeth Hasem, and her German boyfriend, Jens Ziering, are under suspicion. With limited evidence, police are left to wait for Jens to voluntarily give his fingerprints and blood.

Jens says he'll go think about it, calls a few days later and says he will, in fact, submit.

Jens says he'll go think about it, calls a few days later and says he will, in fact, submit.

But before the set appointment with Jens, a shocking setback.

But before the set appointment with Jens, a shocking setback.

Unbeknownst to Virginia investigators, the couple is 4,000 miles away in Europe, on their way on a jet-setting, globetrotting journey vagabonding across the world, keeping a journal of their exploits, along with maps and receipts for their international ports of call.

Unbeknownst to Virginia investigators, the couple is 4,000 miles away in Europe, on their way on a jet-setting, globetrotting journey vagabonding across the world, keeping a journal of their exploits, along with maps and receipts for their international ports of call.

Yen's and Elizabeth's six-month life on the lam ended in this London Marks & Spencer department store.

Yen's and Elizabeth's six-month life on the lam ended in this London Marks & Spencer department store.

Terry Wright and Kenneth Beaver were detectives with the London Police Department.

Terry Wright and Kenneth Beaver were detectives with the London Police Department.