"I should probably mention something right now before this story goes any further: my name is Theodora Grumman, and I am a liar." It's hard for Thea to write four truths a day in the notebook her mother gave her for the summer. Especially when her grandparents' house on the Jersey Shore is even more packed with family than usual, and her cousin Jocelyn wont leave her alone. Jocelyn just might be the world's neatest and nosiest seven-year-old,...