OnawarmsummermorninginNorthCarthage,Missouri,itisNickandAmyDunne’sfifthweddinganniversary.PresentsarebeingwrappedandreservationsarebeingmadewhenNick’scleverandbeautifulwifedisappears.Husband-of-the-YearNickisn’tdoinghimselfanyfavorswithcringe-worthydaydreamsabouttheslopeandshapeofhiswife’shead,butpassagesfromAmy’sdiaryrevealthealpha-girlperfectionistcouldhaveputanyonedangerouslyonedge.Undermountingpressurefromthepoliceandthemedia--aswellasAmy’sfiercelydotingparents--thetowngoldenboyparadesanendlessseriesoflies,deceits,andinappropriatebehavior.Nickisoddlyevasive,andhe’sdefinitelybitter--butishereallyakiller?