Efter anholdelsen af Massino besluttede flere andre medlemmer af familien af blive informanter.<ref name="KotG 230">DeStefano 2007, pp. 230–232</ref><ref name="FF674">Raab, pp. 674–675</ref><ref>{{cite news|last=Marzulli|first=John|title=Mob Rat: Boss is Kin, But He Don Me Wrong|url=http://www.nydailynews.com/archives/news/mob-rat-boss-kin-don-wrong-article-1.550042|access-date=2012-05-02|newspaper=New York Daily News|date=2004-07-02|archive-date= 3. januar 2014|archive-url=https://web.archive.org/web/20140103060915/http://www.nydailynews.com/archives/news/mob-rat-boss-kin-don-wrong-article-1.550042|url-status=dead}}</ref><ref>DeStefano 2007, p. 222</ref><ref name="KotG 230"/><ref>Raab, pp. 678–679</ref> Da retssagen mod Massiano begyndte, stod han overfor 11 tiltalepunkter efter den amerikanske [[Racketeer Influenced and Corrupt Organizations Act|RICO-lov]], herunder syv drab (et yderligere drab, der kunne give [[dødsstraf]], blev holdt ude af retssagen og gemt til en senere retssag), brandstiftelse, afpresning, illegalt spil, hvidvaskning m.fl.<ref>Raab, p. 679</ref><ref>{{cite news|last=Glaberson|first=William|title=An Archetypal Mob Trial: It's Just Like in the Movies|url=https://www.nytimes.com/2004/05/23/nyregion/23mob.html?pagewanted=print&position=|access-date=2012-05-23|newspaper=The New York Times|date=2004-05-23}}</ref><ref>{{cite news|last=Daly|first=Michael|title=Smoking Out the Real Killers|url=http://www.nydailynews.com/archives/news/smoking-real-killers-article-1.643989|access-date=2012-04-21|newspaper=New York Daily News|date=2004-05-26|archive-date= 4. marts 2016|archive-url=https://web.archive.org/web/20160304054135/http://www.nydailynews.com/archives/news/smoking-real-killers-article-1.643989|url-status=dead}}</ref> Efter fem dages votering fandt juryen den 30. juli 2004 Massino skyldig i alle 11 anklagepunkter.<ref name="NYT verdict">{{cite news|last=Glaberson|first=William|title=Career of a Crime Boss Ends With Sweeping Convictions|url=https://www.nytimes.com/2004/07/31/nyregion/career-of-a-crime-boss-ends-with-sweeping-convictions.html?ref=josephcmassino|access-date=2012-04-16|newspaper=The New York Times|date=2004-07-31}}</ref> Straffastsættelsen blev udskudt til den 12. oktober samme år, hvor det var forventet, at der ville blive afsagt en fængselsdom på [[Livsvarigt fængsel|livstid]] uden mulighed for prøveløsladelse.<ref name="NYT verdict"/>
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