"Dexter": Have a killer conversation with John Lithgow

If you wanted to ask John Lithgow your own questions, here's your chance!  The actor, who plays the deliciously creepy Trinity Killer on this season of "Dexter,"  will be on hand to dish on Sunday's Season 4 finale in a live, interactive video chat Dec. 14 at noon PT / 3 p.m. ET. According to a recent Showtime news release, Lithgow will tell all about what it's like to play one of the series' scariest characters.
  
Fans can access the live chat by logging on to SHO.com or Ustream.tv/Showtime (using Facebook, Twitter, MySpace and AIM credentials) and post questions in advance for Lithgow to answer on Facebook.com/Dexter.

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'Dexter': John Lithgow talks about life as the Trinity Killer

'Dexter': 'Hello, Dexter Morgan'

See all 'Dexter' posts here.

Photo: John Lithgow. Credit: Randy Tepper / Showtime