Mac B.回來了 繼皇冠珠寶失竊後，又一棘手案件 皇冠上的珠寶又失竊了！珠寶是鎖在密閉的空間內，它是怎麼消失的？什麼時候消失的？ 鈴鈴鈴！Mac B.的電話響了，女王又打電話來了，她的珠寶又不見了！女王同樣又寄來機票和現金，特務Mac B.的挑戰值又要晉級了。這次的案件，珠寶是鎖在密閉空間，竊賊是怎麼進去的？珠寶去哪了？ Mac B.能夠在竊賊逃走之前抓到他嗎？這可是無敵大挑戰呢，重點不是誰做的，更是怎麼做到的！Mac B.為了查案，還特地飛到古愛爾蘭，遭遇到到鏡蛇攻擊和冰雕寒氣包圍…這背後可能是一樁好幾百年前就策動的復仇計畫。聰明的你，能搶在Mac B.解出之前，查個水落石出嗎？ Mac B. is back... and this time, a new enemy is after the Crown Jewels! Will Mac solve this locked-room mystery in time? An instant New York Times bestseller! The Crown Jewels are in danger... again! When the jewels go missing from inside a locked room, Mac's spy skills are put to the test. How did the thief break in? Where did the jewels go? And will Mac be able to solve this locked room mystery before the thief escapes? This mystery isn't just a whodunit... it's a howdunit! The action in this adventure is nonstop, as Mac travels to an ancient Irish castle to solve the mystery. There, he encounters everything from killer king cobras to bizarre ice sculptures... and even a revenge plot dating back hundreds of years! Will you be able to solve the mystery before Mac does? Also features historical facts masterfully woven throughout the plot, and full-color illustrations on every page. Don't miss the installment of this totally smart and sidesplittingly funny New York Times bestselling series, Mac B., Kid Spy.

Mac Barnett Mac Barnett is the author of several books for children, including Extra Yarn, illustrated by Jon Klassen, a Caldecott Honor Book and winner of a Boston Globe-Horn Book Award; The Wolf, the Duck, and the Mouse, a New York Timesbestseller; and Sam and Dave Dig a Hole, a Caldecott Honor Book and winner of the E. B. White Read Aloud Award. He is the co-author, with Jory John, of the New York Times bestselling series The Terrible Two. Mac Barnett lives in California. Mike Lowery Mike Lowery, creator of the Doodle Adventures series and The Kid's Awesome Activity Calendar, is an illustrator whose work appears in everything from greeting cards to children's books. He lives with his wife and two children in Atlanta, Georgia.