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Season guide

QI: Series O

18 episodes Premiered Oct 20, 2017 Updated Oct 11, 2026
Previously on QI

Season 15 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Picks up essential narrative continuity directly following the events of QI Season 14.
  • ⚡ Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
  • ⚡ Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
  • ⚡ Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.
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Season 15 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 15 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 15: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

Time Saved 0.5h Skipping 1 filler episode
17%
78%
Mytharc (3): Crucial lore & season climaxes
Core (14): Character development & subplots
Side Quest (1): Standalone / filler
S15·E1 Mytharc

Ologies

Oct 20, 2017 · 29 min

In the first episode of the 'O' series, Sandi Toksvig sets out in search of 'Ologies' and 'Odoxies' - and finds out how an amusement arcade helped to win the Cold War, meets a liza

S15·E2 Core

Organisms

Oct 27, 2017 · 29 min

Sandi Toksvig looks at multiple Organisms. Where else are you going to meet the world's deadliest hunter, a photographer hidden inside an ox, and a juggling otter, all in the same

S15·E3 Core

Oceans

Nov 3, 2017 · 29 min

Sandi Toksvig looks at the oceans. Tune in to hear one publisher's suggestion for a radical improvement to Moby Dick. With Aisling Bea, Joe Lycett, David Mitchell and Alan Davies.

S15·E4 Core

Over and Ova

Nov 10, 2017 · 29 min

Sandi Toksvig looks at over and ova. Learn some tricks you can do with eggs, meet a flying pig and join in as the studio audience sings along with western film themes. With Bill Ba

S15·E5 Core

Odorous and Odious

Nov 24, 2017 · 29 min

Sandi Toksvig considers all things Odorous and Odious. Why is the world's second-smelliest man so frustrated? Sandi has the answer. With Nish Kumar, Sally Phillips, Ross Noble and

S15·E6 Core

Odds and Ends

Dec 1, 2017 · 29 min

Sandi Toksvig considers various odds and ends. Ever wondered how to tell a schnauzerorgan from a paddywhack? With Matt Lucas, Romesh Ranganathan, Liza Tarbuck and Alan Davies.

S15·E7 Core

Opposites

Dec 8, 2017 · 29 min

Find out how to sort the sheep from the goats, discover the opposite of Tarzan, and meet the telescope that points straight through the Earth. With Jimmy Carr, Colin Lane, Sara Pas

S15·E8 Core

Operations

Dec 15, 2017 · 29 min

An unconventional look at the theme of Operations. With Bill Bailey, Katherine Ryan, Rhod Gilbert and Alan Davies.

S15·E9 Filler

O Christmas

Dec 26, 2017 · 29 min

Sandi Toksvig hosts the QI Christmas special, with Jason Manford, Romesh Ranganathan, Holly Walsh and Alan Davies. Learn the best way to wrap an awkwardly shaped present and how to

S15·E10 Core

Origins and Openings

Jan 5, 2018 · 29 min

Sandi Toksvig looks into some origins and openings, with Josh Widdicombe, Susan Calman, Rich Hall and Alan Davies. Tune in to hear what Mr First thought of Mr Second, and much more

S15·E11 Core

Objects and Ornaments

Jan 12, 2018 · 29 min

Sandi Toksvig looks at some objects and ornaments. Along the way, discover where you can find an actual UFO and meet the world's best-dressed crab. With Sarah Millican, Cariad Lloy

S15·E12 Core

The Occult

Jan 19, 2018 · 29 min

Sandi Toksvig looks into the occult. Ever wondered how a Hand of Glory can make you rich? Sandi has all the answers. With Aisling Bea, Russell Brand, Noel Fielding and Alan Davies.

S15·E13 Core

Omnishambles

Jan 26, 2018 · 29 min

Sandi Toksvig organises an omnishambles with Josh Widdicombe, Stephen K Amos, Cally Beaton and Alan Davies.

S15·E14 Core

Oddballs

Feb 2, 2018 · 29 min

Sandi Toksvig looks at some oddballs with Jason Manford, Jimmy Carr, Victoria Coren Mitchell and Alan Davies.

S15·E15 Core

Occupations and Offices

Feb 9, 2018 · 29 min

Sandi Toksvig looks into occupations and offices with Deirdre O'Kane, Richard Osman, David Mitchell and Alan Davies.

S15·E16 Core

Overseas

Feb 16, 2018 · 29 min

Sandi Toksvig ventures Overseas to find out about who keeps their brothers in a cage, and much more. With Bill Bailey, Colin Lane, Desiree Burch and Alan Davies.

S15·E17 Mytharc

VG Part One

Feb 23, 2018 · 29 min

A compilation of some of the best bits from Series O, with Sandi Toksvig and Alan Davies.

S15·E18 Mytharc

VG Part Two

Mar 2, 2018 · 29 min

More of the best bits from Series O, with Sandi Toksvig, Alan Davies and guests.

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