Dark Tide — Elizabeth Forrest

Pacific Crest, California, 1968 - A seemingly impossible accident with the Diving Bell ride at the pier amusement park sees three boys drowned. The only survivor is pulled from the ocean in a terror-fueled, near catatonic state...

Pacific Crest, California, the present - Parker Solomon swore never to return to the place where he lost his memory and his childhood. But now the Japanese investors for whom he works are interested in developing this long-ignored piece of California's coast, and Parker is the man they've put in charge of the project. With no other choice, he comes back to Pacific Crest, back to the town where he spent childhood summers with his aunt, back to the town where his best friend died, and he himself nearly perished in both body and mind.

And slowly, far too slowly, long locked-away memories start to return, and all his nightmares begin to come true...