Carolyn Keene 
Mystery of the Jade Tiger [EPUB ebook] 

Nancys in California to investigate a series of break-ins at the home of her fathers friend Terry Kirkland. A Vietnam vet, Terry came away from the conflict with a trunk full of memories. But unknown to him, the trunk also holds a mysteryan exotic secret that now threatens to destroy his family. A twisted trail of intrigue and corruption leads Nancy to a shocking revelation. The truth behind the burglaries rests with a soldier who vanished on a top-secret mission. But the trail of the tiger doesnt end in the jungleit leads right to Terrys door.