Dateline: On Assignment S01E03 - The Face of Terror / The Clone Zone

The Face of Terror - In an exclusive and unprecedented interview with Richard Engel, a New York City man who left the United States to join ISIS and then fled the group after five months is speaking out and revealing the disturbing details of his journey into the heartland of terror — and warning others not to follow in his footsteps.

The Clone Zone - Harry Smith and the 'On Assignment' team headed to South Korea, to the only lab that commercially clones dogs. The SOOAM Biotech Research Foundation in Seoul has already cloned 780 dogs for clients across the world. The price tag for a genetic duplicate of a puppy? Roughly $100,000.