Book 1

Cave of the Inca Re

by Jeanette Windle

Published 1 September 2001

Book 1

When the twins visit a Montana Indian reservation, they find not only a ghost, but also that the Cree tribe is being defrauded of its valuable natural resources and John Sky Preacher, a Christian missionary, faces certain death.

Book 2

Jungle Hideout

by Jeanette Windle

Published 1 September 2001

Book 2

After Justin and Jenny befriend a Vietnamese classmate whose neighborhood is being terrorized by the Dragon Tong, they join forces to expose the gang.

Book 3

Captured in Colombia

by Jeanette Windle

Published 1 April 2002

Book 3

Escape to Deer Island

by Jeanette Windle

Published 1 June 1996
After a mysterious man suggests that their father may be selling information to a Middle Eastern terrorist, the twins become entangled in international espionage.

Book 4


Book 6

Race for the Secret Code

by Jeanette Windle

Published 26 November 2002