S04E01 - History: Part I: The Big Bang

S04E02 - History Part II-She Sells More Than Sea Shells

S04E03 - You, Babe

S04E04 - Escape

S04E05 - Fever

S04E06 - Juice

S04E07 - One Giant Leap

S04E08 - One Small Step

S04E09 - The Call

S04E10 - I Could Have Danced All Night ... But Didn't

S04E11 - 100 Klicks Out

S04E12 - The Always Goodbye

S04E13 - Quest

S04E14 - Rewind

S04E15 - Through and Through

S04E16 - Hello, Goodbye (1)

S04E17 - Hello, Goodbye (2)