Key Out of Time
by Andre Norton
Backed by a Polynesian girl and a team of telepathic dolphins, time agents Ross Murdoch and Gordon Ash discover the mystery of men on a marine planet called Hawaiika. Their cities and civilizations are destroyed, but our agents are taken back from the Time Gate and burgundy in the midst of a power struggle that must have destroyed the planet. "The scope of his imagination and the brilliance of details in the author's previous space-time novels make Andre Norton the main talent among science fiction writers" – Virginia Kirkus. This adventure through the juicy, grotesque world of Hawaii is another testament to the writer's skill.