Luck was one of those sorry cable television series on HBO — from David Milch and Michael Mann — that looks good on paper, but in execution and airing, the drama and the ideals of the show failed. ¬†Yesterday, HBO mercy killed Luck — but blame for the extermination was placed on the deaths of three horses who died during filming instead of the real reason: ¬†The show had lousy ratings despite its mega-star power and HBO renewed it for a second season much too early.