Winona Ryder and Barry Pepper have been cast to star in the Hallmark Hall of Fame movie “When Love Is Not Enough: The Lois Wilson Story.”

Production starts this week in Toronto; the longform will air later this season on CBS.

Movie is based on the true story of Lois Wilson, the co-founder of Al-Anon, and her relationship with alcoholic husband Bill Wilson, one of the founders of Alcoholics Anonymous.

The couple enjoyed an upscale lifestyle in the 1920s, but his drinking eventually led to their downfall. Eventually, her husband became sober — but Lois Wilson still struggled with her own issues surrounding his alcoholism. She eventually helped found Al-Anon in 1951 to help people whose loved ones battle addiction.

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