Debra Roberts

He's now a double agent, working with the police.

It's a high-stakes gamble.

Anthony knows this hangout might put his friend behind bars.

Not to mention the danger Anthony could be putting himself in, sitting alone in a car with a suspected killer.

But he thinks it's the right thing to do for Sarah and her family.

Their greeting is normal enough until it's not.

Less than a minute into sitting in Anthony's car, Liam's getting straight to Sarah's death.

He goes on, saying he's been laying low.

Police have been interrogating him.

But Liam says everything is going exactly as expected.

He planned to be questioned by the police after Sarah's disappearance.

He wanted them to.

And he was confident in the story he had to tell law enforcement.

Unprompted, Liam goes back to that December night he was last with Sarah.

And without hesitation, Liam tells Anthony what investigators have been hoping to hear.

Remember, Buddy was Sarah's foxhound, her best friend.

When police first visited the house after she went missing, Buddy was locked in a cage.

It struck her friends as one of the first signs something wasn't right.

Sarah never locked him up.

More details come pouring out of Liam.