Immerse yourself in the world of mystery and suspense with this vintage hardback book, "The Clue in the Blue" by Betty Allen. This book is the first in the Connie Blair mystery series and was published by Grosset & Dunlap in 1948. The book features an English language binding and is perfect for collectors and fans of antique books. The book is a great addition to any collection and is sure to thrill readers with its mystery and suspense. The author, Betty Allen, has crafted a captivating story that will keep readers on the edge of their seats. This book is a must-read for anyone who loves mystery and wants to experience the excitement of solving a thrilling puzzle.