i opened it up and i had a pulled out a card and said, william allen jordan. >> william allen jordan?is in him. it's close but it's not him. >> at the time, she had talked to the information away, thinking it must be an alias used for undercover work. now, she decided to dig some more. >> you put that name into google. >> i did. >> what came back? >> horrific, horrific news. news beyond anything i could've expected. >> and, her enter, enter and it gets worse and worse. >> the more i read, the worse it gets. >> coming up -- >> this is not spies to, me i knew this was going to happen. >> a revelation from halfway around the world. another woman with another tale about leah mullen. >> it was devastating. it was crushing. it was a coming out of the matrix. >> when dateline continues. when dateline continues michelle lewis had been pouring over a flood of shocking information she found online about her fiancÉe, liam allen. >> i was in my room, it was all dark and everything was just spinning. the hallway was going away from me into blackness. i was literally sick. >> he was notorious, no b