Blood Memory, Book One by Perrin Briar is a zombie book. I gave it four stars.
Haven's crew find a man floating half-dead at sea. After they examine him for bites Rachel says: “Hello Jordan Grant. Welcome to Haven, the safest place on Earth.” He was unconscious and they took care of him for three days before he came to. He had no recent memory. He has lost memories of the past six years and doesn't know what had happened.
I received a complimentary Kindle copy from the author. That did not change my opinion for this review.
Link to purchase: https://www.amazon.com/Blood-Memory-Ultimate-Zombie-Apocalypse-ebook/dp/B00MFXXSHW/