No Survivors at Nadir. Cold Frequencies, #1

They were engineered to survive the end of the world. The world survived. They were sealed below it anyway. When an unidentified body is recovered from the Beaufort Sea, Alaska medical examiner Dr. Kayla Marie discovers something impossible: the man appears to be in his twenties, but government records say he died forty-three years ago-when he was six. Then the lights go out. The body begins to breathe.
Before escaping into the Arctic night, he delivers a warning: Seventy-three survivors. Do not send military personnel. They're waking the station. Drawn into a classified operation beneath the sea ice, Kayla descends into Station Nadir, a Cold War research facility officially destroyed decades earlier. Inside, she discovers flooded laboratories, children's drawings, altered human bodies, and a hidden population raised to believe the surface world had ended.
But the people beneath the ice are neither helpless victims nor simple monsters. They want recognition. They want the children taken from them. And they may already be moving through Alaska's waterways. As military forces prepare to erase the station and everyone inside it, Kayla must decide what deserves to survive-and confront the possibility that she was never merely an outsider. No Survivors at Nadir is an atmospheric blend of literary horror, Arctic science fiction, body horror, and conspiracy thriller.
It is Book One of the Cold Frequencies series.