EXCLUSIVE: Excerpts of Oprah Winfrey's Interview with Mo'Nique's Molesting Brother

On the Monday (April 19) episode of 'The Oprah Winfrey Show,' the revered media maven will take the sexual-abusing sibling of Oscar winner Mo'Nique to task.

After serving 15 years in jail for another sex offense, Gerald Imes comes face to face with Winfrey during a climatic interview, which -- according to a Harpo Productions spokesperson -- Mo'Nique gave her blessings to.

Although the award-winning funnywoman doesn't appear on the show, she has been very vocal about how her eldest brother sexually molested her during her childhood years. As a matter of fact, Mo'Nique said she channeled his demons when portraying the monster mother Mary Jones in the critically-acclaimed drama 'Precious: Based on the Novel 'Push' by Sapphire.'

Below are excerpts from the show:

OPRAH: Before you heard Mo'Nique say that I was able to do that [her performance in "Precious"] because of the monster in my own life, my older brother, Gerald, did you -- were you aware of the pain that you had caused her?

GERALD: No.

OPRAH: You were not aware.

GERALD: No.

OPRAH: What did you think that you had done?

GERALD: I accepted it as being the norm, to be quite honest with you, and let me explain to you why.

OPRAH: So you would abuse her regularly.

GERALD: Not regularly. I just -- let's put it this way. It happened more than I wanted it to.

OPRAH: Well, one time is too many.

GERALD: You're right.

OPRAH: Mm-hmm. So did you when you were abusing her, did you tell her not to tell?

For decades, Imes has denied his sister's claims. In the exclusive interview -- he speaks out publicly for the first time.

Find out the last time he spoke with his sister and what he thought about her Academy Award-winning performance in 'Precious.'

Mo'Nique's estranged parents will also be challenged to discuss what they knew and what action they took regarding the molestation.