Ross Murdock and Gordon Ashe take a team of telepathic dolphins and their Polynesian friend back in time to a water planet whose past may hold the key to the murderous time travelers who visited Earth long ago.
Do you mean, have we changed the future? Who can answer that?

Variants

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  1. Key Out of Time by Andre Norton (World Publishing Co., Mar 1963).
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Andre Norton