内容简介
JACKANDANNIEareonamissiontosaveMerlinfromhissorrowsChargedwithfindingthesecondoffoursecretsofhappiness,thebrother-and-sisterteamtravelbackinthemagictreehousetotheperiodknownastheRenaissance.Thistime,JackandAnniewillneedmorethanaresearchbookandamagicwand.They'llneedhelpfromoneofthegreatestmindsofalltime.WhatwilltheylearnfromLeonardodaVinci?