Once again, the Murphy teens are propelled into another exciting adventure. While accompanying their father on an assignment to document the salvaging of a sunken Spanish wreck off the coast of Key Largo, Christian and Anna soon encounter trouble. Friendship with the local girl Andrea Lance plunges them into danger when they agree to help her find answers surrounding her father's tragic accident at sea. Meanwhile, onboard the salvaging ship, the treasure is in jeopardy of being stolen. From the uncovering of a mysterious artifact to the concealing of true identities, what the Murphys find leads them into adventure, intrigue, and a fight for their lives. Will they be able to escape? And what about the deep-sea core drillings done by the expedition's onboard scientits? Is there eveidence in the ocean's sedimentary layers suggesting that evolution is true?
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