Dennis Rader was arrested in 2005 for murdering eight adults and two children. The FBI determined that the family man, churchgoer and Boy Scout leader was also the notorious BTK serial killer who terrorized Wichita, Kansas from 1974-1991.

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On Wednesday’s episode of Dr. Phil, Rader’s daughter, Kerri Rawson, who says she was a Daddy’s girl and couldn’t believe the man she called her best friend was leading a double life, opens up about her childhood. In the video above, she reads a letter her father, who is currently serving 10 life sentences, wrote to her from behind bars publicly for the first time – and shares how she reacted when she received it.

WATCH: Woman Reveals What It Was Like Growing Up With A Serial Killer Father 

On Wednesday, hear more about Rawson’s relationship with her father as she details it in her new book, A Serial Killer’s Daughter: My Story of Faith, Love, And Overcoming. Check here to see where you can watch.

Excerpts taken from A Serial Killer’s Daughter: My Story of Faith, Love, and Overcoming by Kerri Rawson Copyright © 2019 by Kerri Rawson. Used by permission of Thomas Nelson.

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'This Is My Story And I Have The Right To Tell It,' Says Kerri Rawson, Daughter Of BTK Serial Killer