PBS releases mysterious 'Sherlock' previews

We're just a couple weeks away from the premiere of Sherlock's second season (although some die-hard fans may have already "acquired" the episodes on the Internet).

Anyway, for those who haven't been spoiled, PBS has posted a short preview:

On April 22, the network will post a portion of the premiere episode via www.facebook.com/pbs. Head over there Sunday to see how Holmes and Dr. Watson bounce...