Disgruntled dad Martin Sheen refused to be involved in the Netflix docuseries about son Charlie Sheen 's hard-partying life and journey to sobriety because he's still bitter about what the recovering addict put his loved ones through, RadarOnline.com can reveal.

According to an insider, the Major League star, 60, is exposing his sordid past in the film, titled aka Charlie Sheen , because "he's desperate for closure." Article continues below advertisement

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Yet, insiders said Apocalypse Now legend Martin, 85, shied away from the two-part documentary , which he feared would be littered with folks singing Charlie's praises

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