Mystery of the Desert Giant

The Twin Dilemma

Running on Empty (Hardy Boys Casefiles #36)

Danger Overseas (Nancy Drew: Girl Detective and Hardy Boys: Undercover Brothers Super Mystery #2)

The Haunted Mask

The Secret Keepers

The Eye of Zoltar

The Secret of Moon Castle

The Hardy Boys

The Hardy Boys' adventure to the Yucatan Peninsula in Mexico where they investigate the mystery of the stone idol and stumble upon an illegal smuggling operation.

Identity

Courage

Determination

Problem-Solving

Teamwork

National Pride

The Stone Idol

Discover Your Child's Next Read

Mystery of the Desert Giant

Franklin W. Dixon, 1994

The Twin Dilemma

Franklin W. Dixon, Carolyn Keene, 1993

Running on Empty (Hardy Boys Casefiles #36)

Franklin W. Dixon, 1993

Danger Overseas (Nancy Drew: Girl Detective and Hardy Boys: Undercover Brothers Super Mystery #2)

Franklin W. Dixon, Carolyn Keene, 2008

The Haunted Mask

R.L. Stine, 1993

The Secret Keepers

Diana Sudyka, Trenton Lee Stewart, Stewart Lee, 2016

The Eye of Zoltar

Jasper Fforde, 2014

The Secret of Moon Castle

Enid Blyton, 1953