S4 E1: Opening Moves

S4 E2: Queen's Gambit

S4 E3: Enemies Within

S4 E4: Double Jeopardy

S4 E5: Hornet's Nest

S4 E6: Undercurrents

S4 E7: Forsaking All Others

S4 E8: Pressure Points

S4 E9: Restless Night

S4 E10: Shadow Play

S4 E11: Pitfalls

S4 E12: Discoveries

S4 E13: Fast Forward

S4 E14: Controlling Interests

S4 E15: Unfinished Business

S4 E16: Fatal Attraction

S4 E17: Class of '72

S4 E18: Barriers

S4 E19: Glass People

S4 E20: Second Thoughts

S4 E21: Past Tense

S4 E22: All the King's Horses