Books About Mysterious Symbols

The Best Mysterious Symbols Books for Kids

By the Bookroo Editors

Looking for excellent children's books about mysterious symbols? This collection brings together Bookroo's highest-rated and most useful picks in one place.

Start with our editorial favorites, then browse recommendations organized by reading stage to find the right book for your reader.

The Mark on the Door
#13 in Series
The Shortlist

Our 1 Favorite Books About Mysterious Symbols

Sale price
$958
Chapter Book · Ages 8–12 · 1934

The Mark on the Door

By Franklin W. Dixon · Book #13 in the The Hardy Boys series

Two young detectives chase a stolen boat into a foggy mystery leading to Mexico's wild terrains.

192 pages· 31,461 words· Est. 4.5 hour read
3.8/5 Goodreads · 3,254 ratings
$9.99Save 4%
Hardcover
Summary: Frank and Joe Hardy, aboard their motorboat Sleuth, pursue a mysterious thief in Barmet Bay. When the stolen boat drifts into the fog, the brothers, joined by Chet Morton, embark on a thrilling chase. Their quest leads them to the untamed deserts and mountains of Baja California, where danger and intrigue await. Can they unravel the mystery and catch the elusive stranger before it's too late? Adventure and suspense unfold as they navigate unknown territories.
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