Fathom Five

Fathom Five is written at a Level 4-5 reading level across 276 pages (approximately 65,019 words). Strong independent readers around grade 5.3 can typically handle this book on their own; with parent or teacher support, Fathom Five works for readers up to grade 6.3.

Read aloud, Fathom Five runs about 7.2 hours — long enough to span several bedtime sessions.

We rate Fathom Five as 9ME ("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, social complexity — these are the dimensions parents should evaluate against their reader's tolerance.

Specific content flags noted by reviewers: Fear & Anxiety, Mild Peril, War & Conflict.

Thematically, Fathom Five explores friendship, adventure, historical, mystery, and social justice — these threads give the book room to mean different things to different readers. Each of these themes is concrete enough to seed a real conversation, not just a moral lesson.