Question 1

What reading level are Robert Arthur's books?

Accepted Answer

Robert Arthur's books in HootRated's catalog range from various levels reading level, with the typical book landing at mixed grades. 0 rated titles by Robert Arthur, each with a separate content intensity score so parents can choose by emotional readiness, not just text difficulty.

Question 2

Are Robert Arthur's books appropriate for sensitive readers?

Accepted Answer

0 of Robert Arthur's 0 rated books are at Gentle or Mild intensity (0%) — appropriate for sensitive readers. 0 (0%) are rated Intense or Very Intense. Average content intensity across Robert Arthur's rated catalog is 0/5.

Question 3

What age are Robert Arthur's books appropriate for?

Accepted Answer

Robert Arthur's rated books target various ages. HootRated rates each book on two axes — reading level (text difficulty) and content intensity (emotional weight) — so parents of advanced readers or sensitive kids can pick what matches both dimensions, not just one.

Books by Robert Arthur

The Mystery of the Green Ghost

The Mystery of the Vanishing Treasure

The Mystery of the Silver Spider (Three Investigators)

The Mystery of the Stuttering Parrot

The Secret of Terror Castle

MURDER TO GO (Three Investigators Crimebusters, No. 2)

The Mystery of the Screaming Clock

MYSTERY OF THE BLAZING CLIFFS (Three Investigators, No 32)

The Mystery of the Talking Skull