History has never been sexier. Looking for costumed romance and accented deceit? Period dramas are heating up TV all year long, especially with upcoming series like "Masters of Sex" and "Reign." Treachery and intrigue are rampant in the Five Points slums and Fifth Avenue brownstones of 1865 New York. Detective Kevin Corcoran (Tom Weston-Jones) traverses both worlds. Season two of "Copper" hits BBC America on June 23 at 10 p.m. ET.