Of all the conventions going on in the Chicago area this weekend, this might be the only one that's sold out.
So if you don't have a ticket, the organizers of STAR TREK 45 at the Westin O'Hare in Rosemont are politely asking you not to show up.
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Which is too bad, because it's a pretty star-packed lineup, led by Leonard Nimoy, who got sick last year and couldn't make the Chicago convention. He's back this year, in what is being billed as the 80-year-old actor's last appearance at a Trek convention.
He's joined by Rene Auberjonois, Nichelle Nichols, Jonathan Frakes, Brent Spiner and a host of other actors who had prominent roles in the canon.