Howard Silk is a lowly cog in the bureaucratic machinery of a Berlin-based UN spy agency. When Howard discovers that his organization safeguards the secret of a crossing into a parallel dimension, he is thrust into a shadow world of intrigue, danger and double cross. The only man he can trust is 'Prime', Howard's near-identical counterpart from this parallel world.

S2 Episode 9 : You to You
S2 Episode 8 : In from the Cold
S2 Episode 5 : Shadow Puppets
S2 Episode 4 : Point of Departure
S2 Episode 3 : Something Borrowed
S2 Episode 2 : Outside In
S2 Episode 1 : Inside Out
S1 Episode 10
S1 Episode 9
S1 Episode 8
S1 Episode 7
S1 Episode 6
S1 Episode 5
S1 Episode 4 : Both Sides Now
S1 Episode 3 : The Lost Art of Diplomacy
S1 Episode 2 : Birds of a Feather
S1 Episode 1