"The Outdoor Girls at Rainbow Lake" by Laura Lee Hope continues the thrilling adventures of Betty, Mollie, Amy, and Grace-known as the "Outdoor Girls." This time, the girls embark on a delightful vacation at the serene and picturesque Rainbow Lake. Excited to spend time away from their usual routine, the girls head to the charming Rainbow Lake, renowned for its stunning landscapes and peaceful surroundings. Their arrival coincides with a gathering of campers and vacationers, promising plenty of opportunities for fun and new friendships. As they settle into their cabin by the lake, the Outdoor Girls quickly embrace the joys of outdoor life. They enjoy boating, fishing, and exploring the wooded trails surrounding the lake, immersing themselves in the beauty of nature. However, their tranquil vacation takes an unexpected turn when they stumble upon a mysterious abandoned house deep in the woods. Intrigued, the girls decide to explore the house, and in doing so, they discover hidden secrets that pique their curiosity. As they delve further into the mystery, they encounter strange occurrences and suspicious characters, leading them to believe that something more sinister might be at play. Unfazed by the potential danger, the brave and resourceful Outdoor Girls set out to unravel the enigma and uncover the truth behind the abandoned house. Along the way, they encounter a new friend named Ruth, a local girl with a deep knowledge of the area. With Ruth's help and their characteristic determination, the girls work together to solve the mystery, uncovering surprising twists and unexpected connections. "The Outdoor Girls at Rainbow Lake" is a captivating tale of adventure, friendship, and sleuthing. Laura Lee Hope weaves a spellbinding narrative that takes readers on a journey of discovery, exploration, and camaraderie. As the girls face challenges and unravel the secrets of Rainbow Lake, they demonstrate their intelligence, bravery, and unwavering bond wi