Are you up for a thrilling adventure?

While camping in Wales, it doesn't take long for the Mystery Kids to stumble across a long-lost tunnel that leads to a valley full of secrets.

Follow the children as they are imprisoned in an old farmhouse, discover a hidden cave, sabotage a plane, rescue a missing man, undertake a perilous climb, and more!

Book 3 in the Mystery Series, this adventure novel is set in 1950's Britain and will suit anyone who enjoys Nancy Drew, the Hardy Boys or the Famous Five.

THE MYSTERY SERIES

This middle grade series set in 1950's UK will delight children of all ages. Perfect for fans of Enid Blyton (Famous Five/Secret Seven), Carolyn Keene (Nancy Drew), Franklin Dixon (Hardy Boys) and Gertrude Chandler Warner (The Boxcar Children). Suitable for children 6-8, 9-12, and even adults who love a clean and wholesome story.

~ ~ ~

Standalone Short Story:

The Mystery of Santa Claus

Standalone Unbelievable Adventures:

Mystery of the Invisible Woman

Escape from Inner Earth

The Secret Alien Invasion

Standalone Worldwide Adventures:

International Spy and Midnight Intruder

Haunted Lighthouse and Blizzard Peak

Standalone Choose Your Own Way:

Danger in Monrovia

Lost in the Bermuda Triangle

Escape From Sylvania

Summer Holidays:

The Mystery of Smugglers Cove

The Mystery of the Missing Money

The Mystery of the Missing Gnomes

The Mystery of Adventure Island

The Mystery of the Mysterious Man

The Mystery of the Strange Notebook

The Mystery of Hidden Valley

Winter Holidays:

The Mystery of Claw Mountain

The Mystery of the Golden Elephant

The Mystery of the Red Balloon

The Mystery of the Golden Dragons

The Mystery of the Howling Dog

The Mystery of the Hidden Suitcase

The Mystery of Treasure Island

Easter Holidays:

The Mystery of Four Towers

The Mystery of the Burning Plane

The Mystery of the Russian Spy

The Mystery of Ghost Island

The Mystery of the Perfect Thief

The Mystery of the Underwater Car

The Mystery of the Crown Jewels

Summer Holidays:

The Mystery of the Amphibious Jeep

The Mystery of the Escaped Prisoner

The Mystery of the Bermuda Triangle

The Mystery of the Runaway King

The Mystery of the Secret Lake

The Mystery of Crocodile Island

The Mystery of the Fake President

Winter Holidays:

The Mystery of the Secret Hideout