[ { DAY OF DOOM (39 CLUES: CAHILLS VS. VESPERS #06) } ] by Baldacci, David (AUTHOR) Mar-05-2013 [ Library Binding ]

When Amy and Dan deliver the last ransom. they discover Vesper One's terrifying endgame. The objects he demanded are vital pieces that will harm millions of innocent people when assembled and now the two siblings must hurry to stop him before the whole world goes BOOM.