Posted: 05/04/2012 01:27:06 PMYou'll only find this here for a few hours: Grimm encore has been preempted.
Air Date: 05/22/2012 Tuesday
Start Time: 10:00:00 PM [ET]
Show Name: NBC NEWS SPECIAL
Type: New Booking
Message: DATELINE NBC: 20TH ANNIVERSARY SPECIAL is booked.
All RatingBook.com clients have already had their inventory and estimates updated, with GSMs getting emails notifying them of this change.