She wasn’t answering her phone. Wasn’t responding to emails. Where was Karlyn? Her story tonight on a Dateline Weekend Mystery at 9/8c. | Dateline NBC

"I knew that she had complicated relationships. I don't know what she was mixed up in." The full story tonight at 9/8c on a classic Dateline mystery on NBC. | Dateline NBC

It’s the beginning of a mystery where nothing would be what it seemed... The full story tonight at 9/8c on a classic Dateline. | Dateline NBC

"If you watch Dateline, there's always an end. And that wasn't it." Watch for yourself tonight at 9/8c on a classic Dateline mystery with Josh Mankiewicz on NBC. | Dateline NBC

She gushed about her romance and her job. Life was good. Until… Watch tonight on a Dateline Weekend Mystery at 9/8c. | Dateline NBC

This was a well thought out, cold, calculated plan... Tune in Friday at 9/8c for a classic Dateline mystery with Andrea Canning. | Dateline NBC