NEW '20/20,' WITH REPORTING BY ANCHOR DAVID MUIR, FEATURES EXCLUSIVE INTERVIEWS WITH DAUGHTERS OF KARL KARLSEN WHO NEARLY GOT AWAY WITH MURDERING HIS WIFE AND SON

Daughters Open Up About Relationship With Father, Losing Their Mother and Brother, and Life Now

'20/20' Airs Friday, June 5 (9:01 - 11:00 p.m. EDT), on ABC

A new two-hour "20/20," with reporting by anchor David Muir, features exclusive interviews with Erin DeRoche and Kati Reynolds, daughters of Karl Karlsen who nearly got away with the murder of his wife and son in incidents occurring nearly 18 years apart. Reynolds and DeRoche open up to "20/20" about the heartbreak they felt after losing their mother, Christina Karlsen, and brother, Levi Karlsen; their relationship with Karl over the years; their constant suspicion that Karl started the house fire that killed Christina; the horror they felt when they realized Karl killed Levi; and their lives now with Karl behind bars. The program details Karl's bold motivation that prosecutors say fueled the two murders; how he managed to avoid punishment for Christina's murder for nearly 30 years, despite evidence of arson; how he almost got away with Levi's murder; and the shocking speculation about who could have been his next victim. "20/20" also features new interviews with family members close to the story including Mike Karlsen, Karl's brother; Colette Bousson, Christina's sister; Art Alexander, Christina's father; and Cindy Best, Karl's ex-wife whom he married after Christina's death. "20/20" airs Friday, June 5 (9:01 - 11:00 p.m. EDT), on ABC.

"20/20" is anchored by David Muir and Amy Robach. David Sloan is senior executive producer.