The Car Girls at Crystal Bay; or, The Mystery of the Red Oar is written by Margaret Penrose and is part of a series about the independent and resourceful friends Clarence, Gertrude and Elinor. In this book, the girls decide to go on vacation to Crystal Bay, where they accidentally encounter the mysterious mystery of the red oar. The fast-paced brave journey of Clarence, Gertrude and Elinor will reveal to the reader exciting adventures, true friendships and the most interesting solutions to mysteries. This book, filled with fun adventures and unexpected twists, will definitely capture your imagination and leave warm impressions long after reading.