The S4 ender is tonight and with it comes some unhappy news -- there'll be a fifth season of Orphan Black but it'll be it's last. S5 is slated for 10 episodes to air in 2017.
I think this would be an interesting watch, there was a Japanese remake of Orphan Black done a few years ago called Orphan Black - 7 GENES. From what I can find, some variations were done for the local market but the general premise is the same and lasted one season.