Robert Arthur Jr. books in order
American mystery and speculative fiction writer
- Lived
- 1909–1969
- Books
- 25
- Series
- 1
Robert Arthur Jr. published 8 novels, 2 novellas, 1 short story collection, 5 children's books, 1 poetry collection and 8 other books, beginning with Ghosts And More Ghosts (1963). The series is The Three Investigators (11 books, starting with The Secret of Terror Castle). The best-known is The Secret of Terror Castle (1964).
Updated September 2026
The Three Investigators books in order (11)Series page
Reading order: 1 The Secret of Terror Castle (1964) · 2 The Mystery of the Stuttering Parrot (1964) · 3 The Mystery of the Whispering Mummy (1965) · 4 The Mystery of the Green Ghost (1965) · 5 The Mystery of the Vanishing Treasure (1966) · 6 The Secret of Skeleton Island (1966) · 7 The Mystery of the Fiery Eye (1967) · 8 The Mystery of the Silver Spider (1967) · 11 The Mystery of the Talking Skull (1969) · 12 The Secret of the Crooked Cat (1970) · … all 11 below
- 1.
The Secret of Terror Castle (1964)
- 2.
The Mystery of the Stuttering Parrot (1964)
- 3.
The Mystery of the Whispering Mummy (1965)
- 4.
The Mystery of the Green Ghost (1965)
- 5.
The Mystery of the Vanishing Treasure (1966)
- 6.
The Secret of Skeleton Island (1966)
- 7.
The Mystery of the Fiery Eye (1967)
- 8.
The Mystery of the Silver Spider (1967)
- 11.
The Mystery of the Talking Skull (1969)
- 12.
The Secret of the Crooked Cat (1970)
- 19.
The Mystery of Phantom Lake (1973)
Where to start with Robert Arthur Jr.
Start here
The Secret of Terror Castle
Robert Arthur Jr.'s most-read book and the first of the 11 The Three Investigators books.
Novellas in order
The Mystery of the Dancing Devil (1976)
Short story collections in order
Ghosts And More Ghosts (1963)
Children's books in order
The Mystery of the Screaming Clocks (1968)
The Flaming Footprints (1971)
The Three Investigators (1992)
Poetry in order
Davy Jones' Haunted Locker (1965)
Other books in order
Alfred Hitchcock and the Three Investigators (1964)
Mystery and More Mystery (1966)
Spies and More Spies (1972)
The Mystery Of The Wandering Caveman (1982)
THRILLER DILLER #6 (The 3 Investigators) (1989)
MYSTERY OF THE PURPLE PIRATE (The Three Investigators) (1991)
MYSTERY OF THE TRAIL OF TERROR (Three Investigators, No 39) (1991)
MYSTERY OF THE BLAZING CLIFFS (Three Investigators, No 32) (1992)
Free to read
All free classics
About Robert Arthur Jr.
Robert Arthur Jr. was an American writer and editor of crime fiction and speculative fiction known for his work with The Mysterious Traveler radio series and for writing The Three Investigators, a series of young adult novels.
Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.
Robert Arthur Jr. FAQ
- How many books has Robert Arthur Jr. written?
- Robert Arthur Jr. published 8 novels, 2 novellas, 1 short story collection, 5 children's books, 1 poetry collection and 8 other books that we list, as of September 2026.
- What order should I read Robert Arthur Jr.'s books in?
- Read each series in its own order: start The Three Investigators with The Secret of Terror Castle. The other books stand alone and can be read in any order.
- What is Robert Arthur Jr.'s last book?
- The Secret of the Crooked Cat (1970).
- What is Robert Arthur Jr.'s most famous book?
- The Secret of Terror Castle (1964) is Robert Arthur Jr.'s most widely read book.
- Are Robert Arthur Jr.'s books connected?
- 11 books belong to 1 series (The Three Investigators); the other 14 books stand alone.
- Can I read Robert Arthur Jr.'s books for free?
- Yes. 3 books by Robert Arthur Jr. are in the public domain in the US and free to read online or download here.
Authors like Robert Arthur Jr.
Alfred Bester
Also wrote science fiction and short stories
H. Beam Piper
Also wrote science fiction and literary fiction
Walter M. Miller Jr.
Also wrote science fiction and literary fiction
Cyril M. Kornbluth
Also wrote science fiction and literary fiction
Robert Silverberg
Also writes science fiction and literary fiction
Damon Knight
Also wrote science fiction and literary fiction
Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers, free texts from Project Gutenberg. Last updated September 2026.