Kelsey Grammer revealed how his sister Karen's murder shattered his faith in God, and he explores his journey through grief and healing in his memoir, "Karen: A Brother Remembers."

Grammer does not flinch on the horrific details surrounding Karen’s rape and murder, but they are only a small part of the book — which tells the in-depth story of the siblings’ childhood in New Jersey and south Florida and Grammer’s later life and eventual stardom.