The following article includes allegations of incest, sexual assault, and drug addiction.

Her mother, Susan Adams, was John’s first wife, and the couple divorced in 1962.

By the time she was a teen, Mackenzie had a successful acting career on film and TV.

Mackenzie Phillips looking thoughtful

She appeared in “American Graffiti” and “Go Ask Alice” in 1973.

Two years later, she joinedthe cast of “One Day at a Time"as Julie Cooper.

As a child, Mackenzie didn’t have guidance from the adults in her life.

Mackenzie Phillips smiling

In some cases, they weren’t fulfilling childcare responsibilities such as making meals for the young girl.

By 1975, John was struggling with heroin, and Mackenzie also became addicted.

She first sought treatment when she was 18.

Mackenzie Phillips looking introspective

“It took me many, many years to do the internal work.”

In 1981, Mackenzie rejoined “One Day at a Time” as a recurring guest.

Unfortunately, she suffered a relapse, and by 1983, she lost her role permanently.

Afterward, she pursued addiction treatment again.

Over the years, Mackenzie struggled with drug addiction intermittently, including when she was pregnant with her son.

By 1992, she was in recovery.

After suffering a relapse and being arrested for drug possession in 2008, Mackenzie re-entered addiction treatment.

In addition to acting, she now works as a drug and alcohol counselor.

In 2017, she wrote “Hopeful Healing,” a book about her addiction and counseling experiences.

Four years later, she co-launched the podcast"America Recovers.”

In 1979, on the night before her wedding to Jeff Sessler, Mackenzie took drugs and lost consciousness.

Her father didn’t support the wedding.

Mackenzie later broached the topic with John.

“My dad said, ‘Raped you?

Don’t you mean when we made love?’

I thought, ‘Wow, I’m really on my own here,"’ Phillips recalled toOprah Winfrey.

These sexual encounters continued while Mackenzie was dealing with addiction.

Mackenzie later compared her eventual consent to Stockholm syndrome.

After 10 years, Mackenzie ended the relationship after she became pregnant.

John paid for the abortion procedure.

“It is an abuse of power,” she informed Oprah.

“Whether it be consensual or otherwise, it is a betrayal of trust.”