HBO is bringing back "The Sopranos" on March 12 for 12 episodes, to be followed by the final eight in January 2007.
Journalists pleaded with Chase and the series' stars Friday night "please, please talk about this," New York's Newsday reported Sunday.
But Lorraine Bracco told the assembled reporters: "We've been asked not to reveal things, so it's really hard."
Chase offered a cryptic, "Johnny Sack has been arrested and people see a potential future for themselves in that."
NBC reportedly holds celebs hostage to Jimmy Fallon's show
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