While U.S. audiences were treated to the Season 4 premiere of Downton Abbey on PBS Sunday night, folks in the UK were tuned in to the second installment of the latest season of Sherlock. The 90-minute episode, titled The Sign Of Three, pulled in 8.84M viewers for BBC One and a 31.9% share. That was down slightly from the Season 3 debut on New Year’s Day which was the show’s most-watched episode ever at 9.2M. Still, The Sign Of Three was Sunday’s most-watched program of the day by a large margin. The final episode of Sherlock airs next Sunday in the UK while S3 starts on PBS on January 19th. On Britain’s ITV, meanwhile, Dancing On Ice returned in its final season Sunday night and scored its lowest ever launch with 6.76M viewers and a 26.5% share. That show is on its way out and will likely be replaced next January by the British adaptation of hit Israeli format Rising Star.