6x06: Lock and Key
6x04: Sapphire
6x03: Gold
6x02: Black Shirt
6x01: Black Day
5x06: Mr Jones
5x05: The Shock
5x04: The Loop
5x03: Strategy
5x02: Black Cats
5x01: Black Tuesday
4x06: The Company
4x05: The Duel
4x04: Dangerous
4x03: Blackbird
4x02: Heathens
4x01: The Noose
