Blood Revenge, by David Thor, is a new release and is currently marked down from $9.99 to $4.99 in the Kindle store (it's $15.45 in Hardcover, where it is 265 pages).
Book Description
"James Bali was just beginning a twelve-hour shift when the call came in. The local coast guard base has radioed ahead that a cutter had rescued victims from an unknown tragedy. They reported that one survivor was recovered from an oil platform in the Gulf... Dr. Bali and a hospital nurse moved quickly to the helicopter. Bali briefly consulted with one of the coast guard pilots. With the help of the pilot, the doctor climbed into the aircraft to check on the patient. His first thought was that he was staring at some kind of rubber corpse and that this was all some kind of joke, or possibly a coast guard training scenario. But he quickly discarded that idea. Dr. Bali stood silently and shook off a confused stare...