This final season of Orphan Black is beginning to serve up answers, rather than puzzles – and tonight, finally introduces us to the long-discussed, never-seen scientist P.T. Westmoreland. It also takes several of the clones played by Tatiana Maslany – including Cosima, Rachel, and Alison – and realigns them yet again. And watch for Alison’s suburban husband Donnie, played by Kristian Bruun, to also be placed in serious danger this week. He’s not only in danger of being killed – he’s in danger of being kilt.