What reading level is The Isle of Blood?

The Isle of Blood by Richard Yancey is at a Level 5-6 reading level (Lexile 810L). Recommended for Middle Grades readers (Ages 9-12).

What age is The Isle of Blood appropriate for?

The Isle of Blood is recommended for Ages 9-12. HootRating: 10ME (Moderate — Emotional).

What genre is The Isle of Blood?

The Isle of Blood is fiction — Juvenile Fiction.

Does The Isle of Blood have any content warnings?

The Isle of Blood has a HootRating of 10ME (Moderate — Emotional). No specific content flags noted. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is The Isle of Blood?

The Isle of Blood by Richard Yancey is 538 pages.

Reviewed by HootRated editorial · Last updated September 7, 2026

The Isle of Blood

Richard Yancey

The Isle of Blood

Age Rating, Reading Level & Content Guide

by Richard Yancey

Reading Level 5-6 10ME Ages 9-12 Matched

The text is written at a 5th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content has moderate intensity with some emotionally heavy themes.

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About This Book

Will Henry clutches his lantern as shadows twist around the ancient island of Socotra. Every step deeper into the jungle uncovers creatures no one should ever see. Suddenly, a chilling roar shatters the night—what terrifying monster is stalking them now?

Themes

SupernaturalApprenticesHorror storiesOrphansMonstersAdventure

Quick Assessment

Set in 1888, this middle-grade novel follows twelve-year-old orphan Will Henry as he embarks on a perilous journey with Dr. Warthrop to discover the 'Holy Grail of Monstrumology.' The story features supernatural elements, suspense, and horror themes appropriate for readers aged 9 to 12, with some frightening scenes involving monsters. Parents should note the presence of horror motifs and some intense moments but nothing overly graphic.

Why we rated The Isle of Blood 10ME

The Isle of Blood is written at a Level 5-6 reading level with a Lexile measure of 810L across 538 pages. Strong independent readers around grade 6.5 can typically handle this book on their own; with parent or teacher support, The Isle of Blood works for readers up to grade 7.5.

We rate The Isle of Blood as 10ME ("Moderate — Emotional") because the content sits in the "Moderate" range — moderate conflict that may involve loss, scary scenes, or interpersonal stakes. The strongest signals come from emotional weight, physical peril — these are the dimensions parents should evaluate against their reader's tolerance.

No specific content flags were raised by community reviewers, which is consistent with the moderate intensity score.

Thematically, The Isle of Blood explores supernatural, apprentices, horror stories, orphans, and monsters — these threads give the book room to mean different things to different readers.

Good fit for

✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
✓ Patient readers who enjoy slower, character-driven stories.
✓ Kids drawn to stories about supernatural, apprentices, horror stories.

Maybe not for

! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
! Reluctant readers who need a fast hook — the pacing here rewards patience.