A thrilling teen mystery packed with secret codes, stolen gold, and pulse-pounding suspense!

In the third installment of the Case Twins Mystery Series, seventeen-year-old Dan Case takes on his first painting commission — only to uncover a sinister conspiracy hidden behind the walls of a wealthy woman’s eerie mansion.

What begins as a portrait of Mrs. Maitland’s prized dogs soon spirals into a dangerous mystery involving cryptic messages, a missing heir, and a ruthless gang searching for long-lost gold. As Dan, his twin brother Paul, and their friend Jake race to solve the puzzle, they must outwit shadowy figures, survive late-night chases, and unravel the truth before it’s too late.

Perfect for fans of suspenseful YA thrillers, The Dungeon of Peril Mystery is packed with fast-paced action, clever twists, and rich atmosphere—ideal for teen boys, reluctant readers, and lovers of teen detective stories.

If your reader enjoys mystery books for boys, middle grade thrillers, or brother-led adventure series, this gripping story will keep them hooked to the final page!