STAGIONE:  
4.1 Small Victories  
4.2 The Other Side  
4.3 Upgrades  
4.4 Crossroads  
4.5 Divide and Conquer  
4.6 Window of Opportunity  
4.7 Watergate  
4.8 The First Ones  
4.9 Scorched Earth  
4.10 Beneath the Surface  
4.11 Point of No Return  
4.12 Tangent  
4.13 The Curse  
4.14 The Serpent's Venom  
4.15 Chain Reaction  
4.16 2010  
4.17 Absolute Power  
4.18 The Light  
4.19 Prodigy  
4.20 Entity  
4.21 Double Jeopardy  
4.22 Exodus