Insider's Guides, Official Guides, and Companion Novels

1.
The Hollows Insider (The Hollows, #9.5)
The Hollows Insider (The Hollows, #9.5) 4.18 avg rating — 3,263 ratings
2.
The Sookie Stackhouse Companion (Sookie Stackhouse, #10.5)
The Sookie Stackhouse Companion (Sookie Stackhouse, #10.5) 3.75 avg rating — 13,016 ratings
3.
The Black Dagger Brotherhood: An Insider's Guide
The Black Dagger Brotherhood: An Insider's Guide
by: J.R. Ward
4.31 avg rating — 31,214 ratings
4.
Don't Panic: The Official Hitchhiker's Guide to the Galaxy Companion
Don't Panic: The Official Hitchhiker's Guide to the Galaxy Companion 4.28 avg rating — 25,283 ratings
5.
The Twilight Saga: The Official Illustrated Guide
The Twilight Saga: The Official Illustrated Guide 4.24 avg rating — 35,013 ratings
6.
The World of Robert Jordan's the Wheel of Time
The World of Robert Jordan's the Wheel of Time 3.95 avg rating — 9,375 ratings
7.
The Outlandish Companion
The Outlandish Companion 4.11 avg rating — 15,017 ratings
8.
The Languages of Tolkien's Middle-Earth
The Languages of Tolkien's Middle-Earth 3.99 avg rating — 4,755 ratings
9.
Dark-Hunter: An Insider's Guide (Dark-Hunter, #3.6, #11.5; Hellchaser, #0.5)
Dark-Hunter: An Insider's Guide (Dark-Hunter, #3.6, #11.5; Hellchaser, #0.5) 4.32 avg rating — 1,441 ratings
10.
The Dark-Hunter Companion
The Dark-Hunter Companion 4.23 avg rating — 6,764 ratings
10.
Firefly: The Official Companion Volume Two (Firefly the Official Companion, #2)
Firefly: The Official Companion Volume Two (Firefly the Official Companion, #2) 4.40 avg rating — 961 ratings
12.
A Dictionary of Tolkien (1) (Tolkien Illustrated Guides)
A Dictionary of Tolkien (1) (Tolkien Illustrated Guides)
by: David Day
4.14 avg rating — 902 ratings
13.
The Vampire Companion: The Official Guide to Anne Rice's The Vampire Chronicles
The Vampire Companion: The Official Guide to Anne Rice's The Vampire Chronicles 3.98 avg rating — 5,531 ratings
14.
The Witches' Companion
The Witches' Companion 4.17 avg rating — 2,691 ratings
14.
Vampire Academy - The Ultimate Guide
Vampire Academy - The Ultimate Guide 4.44 avg rating — 37,112 ratings
16.
Percy Jackson & the Olympians: The Ultimate Guide
Percy Jackson & the Olympians: The Ultimate Guide 4.05 avg rating — 21,802 ratings
17.
The Demigod Files
The Demigod Files 4.02 avg rating — 121,169 ratings
18.
Firefly: The Official Companion Volume One (Firefly the Official Companion #1)
Firefly: The Official Companion Volume One (Firefly the Official Companion #1) 4.44 avg rating — 1,706 ratings
18.
The Lord of the Rings: Weapons and Warfare
The Lord of the Rings: Weapons and Warfare 4.58 avg rating — 82,555 ratings
20.
The Complete Tolkien Companion
The Complete Tolkien Companion 4.27 avg rating — 5,000 ratings
21.
The Maps of Tolkien's Middle-Earth
The Maps of Tolkien's Middle-Earth 4.15 avg rating — 7,808 ratings
22.
The Hunger Games Companion
The Hunger Games Companion 4.08 avg rating — 2,905 ratings
22.
Guide to The Hunger Games
Guide to The Hunger Games 4.33 avg rating — 1,873 ratings
22.
Inside HBO's Game of Thrones
Inside HBO's Game of Thrones 4.50 avg rating — 8,428 ratings
22.
Firefly: Still Flying, A Celebration of Joss Whedon’s Acclaimed TV Series
Firefly: Still Flying, A Celebration of Joss Whedon’s Acclaimed TV Series 4.28 avg rating — 436 ratings
22.
The Shadowhunter's Codex
The Shadowhunter's Codex 3.90 avg rating — 39,516 ratings
27.
The Atlas of Middle-Earth
The Atlas of Middle-Earth 4.23 avg rating — 13,617 ratings
27.
Vampire Knight Official Fanbook (1)
Vampire Knight Official Fanbook (1) 4.29 avg rating — 1,319 ratings
29.
Alias Declassified: The Official Companion Guide
Alias Declassified: The Official Companion Guide 3.95 avg rating — 155 ratings
29.
The Outlandish Companion: Volume Two (The Outlandish Companions #2)
The Outlandish Companion: Volume Two (The Outlandish Companions #2) 4.40 avg rating — 3,114 ratings
31.
Bogus to Bubbly: An Insider's Guide to the World of Uglies
Bogus to Bubbly: An Insider's Guide to the World of Uglies 3.72 avg rating — 3,857 ratings
31.
The Unofficial X-Files Companion: An X-Phile's Guide to the Mysteries, Conspiracies, and Really Strange Truths Behind the Show (X-Files Companion #1)
The Unofficial X-Files Companion: An X-Phile's Guide to the Mysteries, Conspiracies, and Really Strange Truths Behind the Show (X-Files Companion #1) 3.61 avg rating — 307 ratings
31.
An Atlas of Tolkien
An Atlas of Tolkien
by: David Day
4.15 avg rating — 2,344 ratings
34.
The Unofficial X-Files Companion II (X-Files Companion #2)
The Unofficial X-Files Companion II (X-Files Companion #2) 3.49 avg rating — 71 ratings
34.
Apocalypse: The Lords of Deliverance Compendium (Lords of Deliverance, #2.5)
Apocalypse: The Lords of Deliverance Compendium (Lords of Deliverance, #2.5) 4.03 avg rating — 1,314 ratings
36.
The Unofficial X-Files Companion: Volume 3 (X-Files Companion #3)
The Unofficial X-Files Companion: Volume 3 (X-Files Companion #3) 3.48 avg rating — 21 ratings
37.
Eragon's Guide to Alagaësia
Eragon's Guide to Alagaësia 4.05 avg rating — 3,575 ratings
38.
The Valdemar Companion
The Valdemar Companion 3.99 avg rating — 2,209 ratings
39.
The Sandman Companion
The Sandman Companion
by: Hy Bender
4.35 avg rating — 6,116 ratings
39.
The Complete Guide to Middle-Earth
The Complete Guide to Middle-Earth 4.19 avg rating — 11,775 ratings
41.
Tolkien: The Illustrated Encyclopaedia
Tolkien: The Illustrated Encyclopaedia
by: David Day
4.14 avg rating — 4,274 ratings
42.
The Discworld Companion: An Invaluable Guide for the Discerning Discworld Traveller
The Discworld Companion: An Invaluable Guide for the Discerning Discworld Traveller 3.93 avg rating — 2,637 ratings