The third Lone Pine book moves to Rye and introduces Jon and Penny who are living in the Gay Dolphin Inn with Jon's mother. The Mortons arrive on holiday and soon there is a mystery. Suspicious characters, secret passages and buried treasure all feature in this tale.

Newnes (1945)	Library copy available
Newnes (1963)
Collins (1969)
Armada (1970)	Library copy available
Goodchild (1983)
Dymocks (1952)	Australian edition
Molino (1963)	Spanish edition
Het Spectrum (1963)	Dutch edition
Girls Gone By (2007)