Book One, Cross My Heart: For once Lucy Larson is looking forward to her summer—what could be better than spending twelve weeks on exotic Catalina Island and sharing the adventures with her cousin? When her cousin's visit is canceled, though, Lucy faces another long summer tagging along on her scientist dad's boring research outings. Lucy's about to pack up and go home. But when she stumbles upon a letter dated 1932, things begin to look up. The writers of the letter mention a hidden dairy and give clues on how to find it. Lucy dives headfirst into the mystery and sets out to find the diary. Book Two, Make A Wish: Now that Lucy and Serena have found the diary, it's time to jump into their first adventure. Since the diary girls had a party, Serena decides it's the perfect opportunity to celebrate Lucy's twelfth birthday! Lucy isn't so sure. She knows only a few of the girls on the Island, and some of them have been pretty rude. Will anyone come? She decides to go for it. But in the midst of their plans, one of the invitations comes back to Lucy—with a threat to cancel the party. Lucy wonders if she made a big mistake. Should she cancel the party ... or face the threat head on? Each of the four, two-book volumes in this exciting series for girls aged 8-12 includes: fun, friends, family, gentle Christian faith, and a fast-paced read.