Mira is shocked when she receives a postcard from her missing mother from Paris. Her father decides it's time for a trip to France to search for her. While visiting Notre Dame, Mira touches a gargoyle and is whirled into the past. There she meets the famous painter Degas and catches a brief, shocking glimpse of her mother. Mira begins to suspect that her mom didn't run out on them but is a prisoner of the past. Can one family on an incredible worldwide adventure stop a plot in time?

As if traveling to a new country in search of her missing mother weren't difficult enough, Mira has to do it dressed as a boy. In a different century. A new postcard from her time-traveling mother points Mira to the 16th century Rome. But before she can rescue her mom, she must follow the clues left around the city to find Giordano Bruno, a famous thinker and mathematician, who discovered something so shocking that important Italian officials don't want it revealed. All the while avoiding the Watchers—time-traveling police who want Mira back in her own time. It's another whirlwind adventure for Mira, and this time she is determined to bring her mother out of the past. Praise for Mira's Diary: Lost in Paris "An engrossing, diary-style blend of history, mystery, and time travel."—Publishers Weekly "With an engaging story, accessible history, and a spunky heroine, Mira's Diary is an absorbing, fast-pace adventure."—School Library Journal "Mira's Diary: Lost in Paris is a passionate celebration of honor and integrity...fast paced and compelling."—Karen Cushman, Newberry Medal Winner and New York Times bestselling author

In the third book of the popular time-travel series, Mira navigates her way through WWI London, meeting famous suffragists and writers like Sir Arthur Conan Doyle. Instructed by her time-traveling mother to steal a German spy's briefcase full of secrets and pass on the information to British Intelligence, Mira struggles with whether the changes she has been working for are the right thing to do after all. How much control do we really want of history? When is it best to leave our fate in destiny's hands?

In the last book of the time-travel series, Mira explores the past of her familiar Bay Area, discovering layers of history in San Francisco and learning the real reason her mother has been working to change history. On the way, she meets Mark Twain and uncovers the Watcher's real identity.