The eight-episode British crime drama "Broadchurch" was a huge hit in the U.K., not just in terms of ratings but also Twitter traffic, beating out the much-discussed season three finale of "Downton Abbey." We'll see if it generates as much attention when it premieres in the U.S. on BBC America on Wednesday, August 7th at 10pm. Created by Chris Chibnall ("Torchwood"), the series is a murder mystery centered around a pair of detectives, one (David Tennant) new to the area and the other a local (Olivia Colman) who knew the victim. The trailer for "Broadchurch," below, isn't particularly flashy, though it does highlight the considerable talents of the two leads.