Unknown (narrator or host)

Lieutenant Mike Hennessey runs the operation.

Landwehr wants to collect a covert sample of Rader's DNA, but is afraid to approach the suspect and perhaps tip him off.

Instead, Landwehr looks to Rader's family.

The medical records of Dennis Rader's 27-year-old daughter, Carrie, are subpoenaed, and a tissue sample is sent to the state crime lab in Topeka.

On February 25, 2005, the BTK Task Force waits for Dennis Rader to come home for lunch.

30 minutes after arresting Rader, Lieutenant Ken Landwehr and FBI agent Bob Morton sit down with their suspect.

On the table in front of them is the computer disk traced back to Rader.

Landwehr and Morton want to talk about murder.

Rader, however, wants to talk about the newspaper ad that was his downfall.

Rex, it will be okay.

A message planted by police for BTK and leading the killer to believe law enforcement could not trace his computer disk.

Even in a police interrogation room, Dennis Rader seems to relish the game of cat and mouse.

For detectives, however, the back and forth quickly grows old.

Over the next 30 hours, Dennis Rader provides details on the BTK victims police already knew about.

Then he tells them about two more victims BTK never took credit for because they were neighbors.

Rader confesses to abducting, strangling, and dumping the bodies of Maureen Hedge in 1985 and Dolores Davis in 1991.

Both killings share the BTK MO.

In the case of Dolores Davis, he covered the victim's face with a painted porcelain mask.

Hedge and Davis bring the total number of victims to 10 and the story of the BTK killer to its final chapter.

One that will be played out before a packed courtroom in Wichita, Kansas.