The Pinkertons reminded me, and not in a good way, of those Saturday morning cinema cowboy movies where the 'bad guys' wore handkerchiefs on their faces, waved guns in the air yelling "this is a holdup", hid in full view on some rocks and took pot shots at the 'good guys' I half expected to see Gabby Hayes or Hopalong Cassidy come riding to the rescue. I'm not sure of the original nationality of the Pinkertons a fact that remains a mystery thanks to the unidentifiable accents (plural) adopted by the senior Pinkerton. Was it Scottish, Irish or maybe Scandinavian? I really can't find anything to commend this effort at a period drama. For quality drama from a similar period try Ripper Street which has its own, better characterized, Pinkerton agent. Similarly there's series three of Peaky Blinders to look forward to.