Clone Wars: Orphan Black S02E08 Variable and Full of Perturbation

It's been awhile, but we're introduced to a new clone, and like Sarah in the beginning, has no idea of what he's a part. It gets a bit more complicated, but Ethan Duncan comes in from the cold to work at Dyad now that Aldous Leekie's been killed and the hope is that he can produce a cure for Cosima and potentially the others.