Elizabeth Vargas

So you believe the police arrested the wrong man? I know it. And to prove it, she's trying to take down the juror she says lied and helped put her son behind bars.

So you believe the police arrested the wrong man? I know it. And to prove it, she's trying to take down the juror she says lied and helped put her son behind bars.

Losing 30 pounds, dying her hair to woo him. Low-cut blouses, push-up bra, high heels. Secretly recording, trying to catch him. And not just the juror putting the prosecutor in her crosshairs. I've never lost a homicide case. Oh, God. You know why? Because she's a cheater. Just weeks ago, a bombshell game changer for the mother who put her own life on hold to live a double life for her son.

Losing 30 pounds, dying her hair to woo him. Low-cut blouses, push-up bra, high heels. Secretly recording, trying to catch him. And not just the juror putting the prosecutor in her crosshairs. I've never lost a homicide case. Oh, God. You know why? Because she's a cheater. Just weeks ago, a bombshell game changer for the mother who put her own life on hold to live a double life for her son.

Is there any way that you're blinded by your mother's love? I've been begging for a fair trial. Just give me a fair trial. Undercover Mother. I'm Elizabeth Vargas and this is 2020. Here's Nightline's Juju Chang.

Is there any way that you're blinded by your mother's love? I've been begging for a fair trial. Just give me a fair trial. Undercover Mother. I'm Elizabeth Vargas and this is 2020. Here's Nightline's Juju Chang.

Ich glaube an den Fall. Ich glaube, dass es gerecht und justiert wurde.

Ich glaube an den Fall. Ich glaube, dass es gerecht und justiert wurde.

A mother who will never give up. And that's our program for tonight. Thank you so much for watching. I'm Elizabeth Vargas. For David Muir and all of us at ABC News in 2020, have a great night and a great weekend.

A mother who will never give up. And that's our program for tonight. Thank you so much for watching. I'm Elizabeth Vargas. For David Muir and all of us at ABC News in 2020, have a great night and a great weekend.

One of the most notorious and elusive serial killers in American history.

One of the most notorious and elusive serial killers in American history.

Now, how an obsessed detective and his team and a tiny DNA sample almost forgotten in cold storage for four decades led to last week's arrest.

Now, how an obsessed detective and his team and a tiny DNA sample almost forgotten in cold storage for four decades led to last week's arrest.

And you won't believe the man authorities say is behind the mask. I'm Elizabeth Vargas.

And you won't believe the man authorities say is behind the mask. I'm Elizabeth Vargas.

And he begins tonight with the words from an author who spent much of her life obsessed with this case.

And he begins tonight with the words from an author who spent much of her life obsessed with this case.

What a survivor. We will continue to follow this incredible story. And that's 2024 Tonight. I'm Elizabeth Vargas.

What a survivor. We will continue to follow this incredible story. And that's 2024 Tonight. I'm Elizabeth Vargas.