This is the third book in the Abby South Seas Adventures series.
When illness sweeps through Oahu, Abby, her sister Sarah, and her friends Luke and Kini are all sent back to California to be safe with Luke's Aunt Dagmar. But California isn't as nice as it used to be- gold has recently been found nearby, and a gold rush has followed. The kids themselves go looking for gold, hoping to help pay the Hawaiian ranch's bills and doctor bills for sick family still in Hawaii.
As if looking for the gold wasn't hard enough, Sarah and Kini go missing, and the search for them teaches Abby a valuable lesson about God.
Tyndale House Publishers