Sex at Dawn     How We Mate, Why We Stray, and What It Means for Modern Relationships              By:                                                                                                                                 Christopher Ryan,                                                                                        Cacilda Jetha                               Narrated by:                                                                                                                                 Allyson Johnson,                                                                                        Jonathan Davis,                                                                                        Christopher Ryan (Preface)                      Length: 10 hrs and 57 mins     5,949 ratings     Overall 4.4