Venice, Italy: Mimi has taken her grandchildren Avery, Ella, and Evan on a surprise trip t the Grand Canal in Venice]] only the surprise is on Mimi! She does not realize that her special mystery writing suitcase containing her crucial-to-creativity mystery writing eyeglasses, monster coffee mug, and more had been stolen! Alas, so has a special historical mask that she has been lent to wear to the famous Black & White Ball. Who will save the day? Well, Avery, Ella, and Evan are used to bailing their grandmother out of mystery messes]] but this time? Well, they have their own problems: Kidnapped? Lost in the mysterious maze of side canals in the dark abroad a gondola]] And the only way they can solve the mystery seems to depend on THE READER OF THIS BOOK! After all, unless YOU figure out the clues in graphical novel-and in the nick of time! well, the kids and Mimi will be up the canal without a paddle, Mimi’s writing tools, THE MASK, and as Evan will readily tell you: NO DINNER!