MASTERPIECE: "Sherlock: The Sign of Three"

MASTERPIECE: "Sherlock: The Sign of Three"

Sun, 01/26/2014 - 10:00pm

Shown from left to right: Amanda Abbington as Mary Morstan, Martin Freeman as John Watson and Benedict Cumberbatch as Sherlock Holmes

Credit: Courtesy of (C)Robert Viglasky/Hartswood Films 2013 for MASTERPIECE

Sherlock faces his biggest challenge of all – delivering a Best Man’s speech on John’s wedding day. But all isn't quite as it seems. Mortal danger stalks the reception - and someone might not make it to the happy couple's first dance. Sherlock must thank the bridesmaids, solve the case, and stop a killer. MASTERPIECE: "Sherlock: The Sign of Three" airs Sunday, January 26, 2014 at 10 p.m. on WXXI.