Volume 02 (Rokubu's Treasure; Lost Royale)
Volume 03 (Breakthrough; Faded Star Map)
Volume 04 (1st,April,1999; Jacob's Staircase)
Volume 05 (Twisted Melody; Light Afterimage)
Volume 06 (My Memories; The Blue Locked Room)
Volume 07 (Serial John Doe; Gloomy Afternoon)
Volume 08 (Falling Down; The Great School Festival Disaster)
Volume 09 (Rules of the Game; Frozen Hammer)
Volume 10 (In the Hand of the Witch)
Volume 11 (A Sea to Depend On; Winter Zoo)
Volume 12 (In the Corner of the Galaxy; Rainbow Mirror)
Volume 13 (Calamity Man; The Klein Tower)
Volume 14 (Summer Vacation Incident; Irregular Bound)
Volume 15 (Glass Room; Dedekind Cut)
Volume 16 (Cherry Blossoms; Cherry Blossoms; Dead Tears)
Volume 17 (Calamity Man's Worst; Black Nightshade)
Volume 18 (Arrival of the Famous Detective(s)!; The 3 Birds)
Volume 19 (The Ghost of Macbeth; The Sage's Bequest)
Volume 20 (Infinite Moon; The Busy Ms. Enari)
Volume 21 (Joined Threads; The Beautiful Actress being Watched, the Fear of the Stalker, the Gunshot Reverberating from the Cliff Face, What Touma and Kana Saw)
Volume 22 (Summer Stream; Venetian Maze)
Volume 23 (Liar; Another World)
Volume 24 (Christmas Eve Eve; Crime and Punishment)
Volume 25 (The Great UFO War; Parallel)
Volume 26 (Summer Time Capsule; Accomplice)
Volume 27 (Mirror Image; Juror Duty)
Volume 28 (The Pharaoh's Neck Ornament; Human Fireworks)
Volume 29 (Elephant; Motive and Alibi)
Volume 30 (The Mannequin Murders; Dog Dish)
Volume 31 (The Devil in Your Eye; Promise)
Volume 32 (Magic and Magic; Red File)
Volume 33 (The Paradox Room; The Detective Novelist Murder Case)
Volume 34 (Calamity Man Gets Married; Mother Shrine)
Volume 35 (The 2 Suspects; Christmas Present)
Volume 36 (Kurogane Mansion Murder Case; Q and A)
Volume 37 (A Lecture in Murder; Anime)
Volume 38 (Empty Dream; 17)
Volume 39 (The Incident in Aabanhiruzu Apts., Room 6; Grand Tour)
Volume 40 (Love Square; Locked Room #4)
Volume 41 (Special Envoy for Balkia; Caff's Recollections)
Volume 42 (Escher Hotel; The Tower of Logic)
Volume 43 (Verification; Ginger the Salesman)
Volume 44 (The Tuba and the Grave; Question!)
Volume 45 (Venus; First Love)
Volume 46 (Lost Love; Pilgrimage)
Volume 47 (The Sun is Still High Up; Hill Road)
Volume 48 (Literary Agent, Fayha's Book of Paintings)
Volume 49 (Unrelated Incident, Love Story)
Volume 50 (Observation, Escape Game)
- Start of the second season: iff -
Volume 01 (iff, In the year of Quantum Mechanics)
Volume 02 (The Naked Emperor, Shape of a Killer)
Volume 03 (The Three Assassins, Bike Thief)
Volume 04 (The Green Priestess, Handle Name)
Volume 05 (Even, The Imperfect Sealed Room Mystery)
Volume 06 (The Man Who Fell to Earth, Sudden Change)
Mr. and Mrs. Touma:
Detective Koutarou Mizuhara and Mrs. Mizuhara:
Det. Sasaduka (and other detectives):
Loki (Sid Green) and Eva Sukta:
Alan Brad and Elly Francis:
The Mystery Club:
Fermat's Last Theorem.
- Volume 1: Gold Pupil - The use of a Leyden jar to store static electricity charge.
- Volume 2: Rokubu's Treasure - Aspirin as a blood thinner.
- Volume 2: Lost Royale - History of the Bugatti Royale car.
- Volume 3: Faded Star Map - Discussion of star viewing. Mentions of Tycho Brahe, Johannes Kepler and Edwin Hubble. Description of the Gregorian Reflector-style telescope.
- Volume 4: 1st,April,1999 - Magnetism, magnets and monopoles.
- Volume 4: Jacob's Staircase - Conway's Game of Life, and how software firewalls and viruses work.
- Volume 5: Twisted Melody - Description of cellos made by Domenico Montagnana, Bach's "Suites for Unaccompanied Cello" and Kodaly's "Sonata for Solo Cello".
- Volume 5: Light Afterimage - Pinhole cameras, Ernst Leitz and the operations of the vintage Leica camera.
- Volume 7: Serial John Doe - Discussions of e, i, pi and -1. Mentions of Leonhard Euler, John Napier and Carl Gauss.
- Volume 9: Frozen Hammer - Discussion of the Bridges of Konigsberg problem and topology. Mention of Leonhard Euler.
- Volume 12: In the Corner of the Galaxy - Mention of Jack Williamson's Jonbar Hinge concept from the short story "Jon Barr".
- Volume 13: The Klein Tower - The story revolves around a specific kind of 3 or 4 story tower that can be found in Japan that is shaped like a corkscrew (Sazae-tou). Touma refers to this shape as a Klein bottle.
- Volume 15: Glass Room - Discussions of vacuum tubes, analog versus digital sound and gramophones.
- Volume 15: Dedekind Cut - Discussion of the Dedekind Cut, early AI research, Big Blue and chess, and a mention of Evariste Galois.
- Volume 16: Dead Tears - The properties of light at the boundaries of different surfaces.
- Volume 18: Arrival of the Famous Detective(s)! - Light reflects off glass doors.
- Volume 20: Infinite Moon - Discussion of infinity, and Georg Cantor's idea of aleph-null.
- Volume 23: Another World - The entire chapter is an explanation of the Riemann Hypothesis, with a little discussion of the 1974 Aricibo data transmission.
- Volume 25: Parallel - A simple overview of string theory, and a mention of the possibility supported by the theory of parallel worlds.
- Volume 26: The Pharaoh's Neck Ornament - Shinra from C.M.B. inspects an ancient Egyptian necklace on a dig near Cairo.
- Volume 29: Elephant - A discussion on Poincare's Conjecture, and an overview of topology.
- Volume 31: The Devil in Your Eye - Fraud performed by science researchers, and a mention of Hideyo Noguchi.
- Volume 32: Magic and Magic - Discussion of the magic book written by Professor Hoffmann.
- Volume 32: Red File - Discussions of financial markets, hedge funds and futures trading.
- Volume 33: The Detective Novelist Murder Case - Brief discussion of how mathematicians deal with paradoxes that show up in proofs.
- Volume 36: Kurogane Mansion Murder Case - Discussions of the strong and weak forces, and the possible existence of gravitons.
- Volume 38: 17 - During the Edo period (1600's to 1850's), certain people across Japan dabbled in the early development of differential calculus as an intellectual pastime, called "wasan" (Japanese algebra). However, rather than finding practical real-world applications for it, wasan masters would paint their problems and solutions on votive boards ("sangaku") to be donated to shinto shrines. This chapter discusses wasan, sangaku and the potential independent discovery of the math concept of "i".
- Volume 39: Grand Tour - No real science, per se, but the story revolves around a group of scientists that worked on the Voyager I and II satellites during the early 1970's, and the chapter has a number of really nice space drawings, plus a discussion on slingshot orbits.
- Volume 42: Escher Hotel - An examination of the artwork by M.C. Escher, and examples of attempts to recreate certain illusions in real life.
- Volume 42: The Tower of Logic - A discussion of logic puzzles, and how mathematic logicians develop and verify various proofs.
- Volume 44: Question! - A fairly comprehensive review of the history of the discovery of Fermat's Last Theorem. The entire chapter involves the various approaches that led up to Andrew Wile's complete solution.
- Volume 45: Venus - The story revolves around an astronomy textbook primer about the Sun and the inner planets. The science involves a description of how the Sun works, and a possibility of how the moon and Earth formed.
- Volume 45: First Love - No real science, just a look at a donkey rider logic puzzle by famed puzzle maker Sam Loyd.
- Volume 46: Lost Love - The solution is given for the donkey rider puzzle.
- Volume 47: The Sun is Still High Up - A discussion of the Traveling Salesman Problem, and attempts to solve the NP vs P problem.
- Volume 50: Observation - Touma talks about the search for dark matter using CCD sensors at the Cern Large Hadron Collider and the Keck telescopes in Mauna Kea, Hawai'i, and the neutrino detector at Kamiokande.
- Volume 01: In the Year of Quantum Mechanics - Part of the story is set in the 1920, when Heisenberg and Max Born were arguing with Einstein over the then-new concepts of quantum particles, which prompted Einstein to say that "God does not play dice with the universe". There's a bit of quantum theory, and a short discussion about the people on both sides of the debate.
- Volume 02: Shape of a Killer - This is a locked room murder mystery set in the "Geometry Hotel" in Malta. There's a bit of discussion about pretzel problems and squaring the square.
- Volume 04: The Green Priestess - Discussion of the Lotka-Volterra (Predator/Prey) equations.
- Volume 04: Handle Name - Descriptions of how DoS and DDoS attacks work, and what LEET is.
- Volume 05: The Man Who Fell to Earth - Discussion of the Casimir effect and how it can be used with wormholes to allow for one-way time travel.