Lucifer’s Hammer is a classic post-apocalyptic science fiction novel written in 1973 by Larry Niven and Jerry Pournelle. A California television producer decides to make a documentary series based on a newly discovered comet that is expected to pass dangerously close to Earth. Though politicians and scientists try to assure people that there is almost no chance the comet will actually strike the Earth, many are not convinced and people begin storing food and supplies in anticipation of a great disaster, should the comet actually crash. Much to the surprise of the scientific community the comet breaks up into several smaller comets that fall to Earth and strike countries and cities throughout the world. The effects are ruinous, with earthquakes and tsunamis and floods destroying civilization as we know it. Those who survive are left to try and forge a new civilization while fighting against a powerful renegade army of cannibals.