Karl Karlsen, the man who killed his son and wife 17 years apart for insurance money, will be interviewed on Dateline NBC.

Karlsen has been convicted in separate trials of killing his first wife, Christina Karlsen, and their son, Levi Karlsen.

Christina Karlsen died in a fire in Murphys, California in 1991.

Levi Karlsen died in 2008 after his father knocked a truck off a wobbly jack onto his chest in Varick, Seneca County.

Authorities ruled the California death an accident, but after Karl Karlsen was convicted of killing his son in Central New York, they reopened the case.

Karl Karlsen was found guilty by a California jury early this month of killing his first wife. Weeks later, Dateline announced the show is airing an episode about the case.

The interview with Karl Karlsen, featured in the episode about the murder of his wife and son, is set to air at 9 p.m. Friday on NBC.

The episode will also feature interviews with Christina Karlsen’s family members; Karlsen’s ex-wife, Cindy Karlsen; and police, NBC News said.

Syracuse.com | The Post-Standard interviewed Karl Karlsen in 2012 as he awaited trial for the death of his son. In the three-hour-long jailhouse interview in Seneca County, he denied killing both Levi and Christina Karlsen to collect large insurance policies.

“There is no way you kill somebody for money,” Karlsen told Syracuse.com | The Post-Standard. “You just don’t.”

Less than a year later, Karlsen pleaded guilty -- admitting he crushed his 23-year-old son under a truck to collect a $707,210 life-insurance policy.

On New Year’s Day 1991, Christina Karlsen died trapped behind a boarded-up window in the smoke-filled bathroom of her California home. The death was investigated, but was eventually ruled an accident.

Karl Karlsen and the couple’s three children, including Levi, escaped the blaze. After collecting a $200,000 policy for his wife’s death, he bought a new home and moved his family to Upstate New York.

Before the trial for his first wife’s murder, Karlsen was serving 15 years to life in a New York prison for murdering his son.

He’s set to be sentenced on March 17 for Christina Karlsen’s murder, reported the Calaveras Enterprise.

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