The Vanishing Houseboat by Mildred Wirt takes young reporter Penny Parker on a thrilling adventure as she investigates the mysterious disappearance of a houseboat from the local marina. Drawn by the intrigue of a boat that seemingly vanished without a trace, Penny is determined to uncover the truth behind this puzzling event.

As Penny delves into the mystery, she encounters a colorful cast of characters and uncovers hidden secrets that lead her on a journey filled with unexpected twists and turns. With her sharp instincts and unwavering determination, Penny pieces together clues that reveal a larger plot, putting her investigative skills to the ultimate test.

Set against the scenic backdrop of winding waterways and bustling marinas, The Vanishing Houseboat is a captivating tale of mystery and adventure. It's perfect for readers who love unraveling secrets and following a resourceful heroine through a maze of intrigue.