One man is dead after a single-car crash in Barnstable early Saturday morning, according to police. Barnstable Police responded to a car crash on Race Lane near Indian Pond Point Road in Marstons Mills, a village in Barnstable, around 1:30 a.m. Saturday. One victim was transported by medical helicopter to a Boston area trauma center, police said. The Centerville-Osterville-Marstons Mills Fire Department transported two other victims to Cape Cod Hospital, where one man was pronounced dead. The crash was under investigation by Barnstable police.Anne Steele can be reached at email@example.com. Follow her on Twitter @AnneMarieSteele.