Theexplosivefinaletothe#1bestsellingseries!Fourteen-year-oldAmyCahillandheryoungerbrother,Dan,havehadenough.Notonlydotheyhavetofindthe39Cluesfirst,they’reexpectedtoreunitetheirbackstabbingfamily-thesamepeoplewhokilledtheirparents.ButAmyandDanhaven’tsurvivedexplosionsandassassinationattemptsfornothing.TheyhaveaplantofinishtheCluehutnontheirownterms.Toobadthere’safinal,fatalsecrettheMadrigalshaven’ttoldthem.AsecretthatcouldcostAmyandDan-andtheworld-everything...