S4 E1: Absent Friends

S4 E2: Sacrifice to Science

S4 E3: Girl Power

S4 E4: The Two Becketts

S4 E5: Hell and High Water

S4 E6: Pandora's Box

S4 E7: Jewel Control

S4 E8: Twin Geeks

S4 E9: Money Spiders

S4 E10: The Enemy Within