One of the stars of hit U.S. TV period drama Hatfields & Mccoys is suing producers of the mini-series for injuries he received on the set. Thomas McKay, who played Jim McCoy, claims he was thrown from a horse and into a tree. In his lawsuit, he claims the producers assured him he was in good hands with the on-set horse experts - but they put him on an out-of-control beast. The actor claims he suffered serious and permanent injuries, which caused him "great physical, mental and nervous pain", reports TMZ.com. McKay also alleges the horses were abused on the set. He is suing Hatfield & McCoys Productions, Thinkfactory Media and others for unspecified damages.