Episode 1 "I-Spy"Episode 2 "International"Episode 3 "Imbroglio"Episode 4 "Indecision"Episode 5 "Invertebrates"Episode 6 "Inventive"Episode 7 "Incomprehensible"Episode 8 "Inequality and Injustice"Episode 9 "Illness"Episode 10 "The Inland Revenue"Episode 11 "Infantile"Episode 12 "Illumination and Invisibility"Episode 13 "Intelligence"Episode 14 "Idleness"Episode 15 "Ice (Christmas Special)"Episode 16 "The Immortal Bard (Shakespeare Special)"
