Peter Tonkin builds a better Jaws with Killer, dropping the awkward Mafia and infidelity subplots from Peter Benchley’s best seller and cutting right to the good stuff: five characters, stranded on an ice floe, at the mercy of a pod of killer whales, led by a crazed super-whale escaped from a military laboratory. It’s a nonstop symphony of chaos as these angry pandas of the sea bite off blue whale tongues while botanists toss dynamite at herds of stampeding walruses.