Now Playing: Hot Online Romance Takes Surreal Twist

Now Playing: 'Catfish' Guys Get Ready for Premiere

Now Playing: Paintings Behind the Movie 'Catfish'

Now Playing: Inside 'Catfish'

Now Playing: 'Catfish': Web of Lies Begin to Unravel

Now Playing: 'Catfish' Filmmakers Confront 'Megan'

Now Playing: Exclusive: The Real Megan in 'Catfish'

Now Playing: Police Remain Confident They Will Find Faith Hedgepeth's Killer: Part 6

Now Playing: UNC Student Found Bludgeoned to Death in Her Own Apartment: Part 2

Now Playing: FBI Develops Profile of Murdered UNC Student's Killer: Part 3

Now Playing: Friends, Family Stunned to Learn UNC Student Is Dead: Part 1

Now Playing: Voicemail Found Left by UNC Student's Phone on Night of Her Murder: Part 4

Now Playing: Friend of Murdered UNC Student Describes Moment She Found Her Body

Now Playing: Daughter Celebrates Birthday For the First Time With Biological Mom: Part 6

Now Playing: Women Take DNA Test to Learn If They Are Long Lost Mother, Daughter: Part 5

Now Playing: Mom Insists She Never Abandoned Her Baby at St. Louis Hospital: Part 4

Now Playing: Mom Reunites With Daughter She Thought Was Dead For Nearly 50 Years: Part 1

Now Playing: Attorney Claims Babies Were Sold Out of St. Louis Hospital Parking Lot: Part 2

Now Playing: Evidence Suggests Woman's Baby May Have Been Abandoned, Not Stolen: Part 3

Now Playing: Undercover Agent Confronts Slain FSU Professor's Ex-Mother-in-Law