Clue of the Gold Coin by Helen Wells is a thrilling mystery novel that will keep readers on the edge of their seats from beginning to end. The story follows the adventurous teenage detective, Penny Parker, as she tries to unravel the secrets behind a mysterious gold coin that has come into her possession.

The author does a fantastic job of creating a sense of suspense and tension throughout the book, making it impossible to put down. The characters are well-developed and believable, and the plot is cleverly constructed with plenty of twists and turns to keep readers guessing.

One of the things I enjoyed most about Clue of the Gold Coin is the way it explores themes of friendship, loyalty, and determination. Penny's unwavering commitment to solving the mystery and helping her friends is truly inspiring, and her fearless attitude makes her a strong and relatable protagonist.

Overall, Clue of the Gold Coin is a gripping and engaging read that is sure to appeal to fans of mystery and adventure novels. I highly recommend it to anyone looking for a fast-paced and entertaining story that will keep them guessing until the very end.

Book Description:
Vicki Barr is a popular mystery series for girls published by Grosset & Dunlap from 1947 to 1964. This book is volume 12 of The Vicki Barr Air Stewardess Series. When a shipment of priceless gold doubloons being transported on her flight from New York to Tampa goes missing, Federal Airline's stewardess Vicki Barr is unwittingly dragged into a sinister conspiracy spanning two countries. Vicki faces a determined group of criminals willing to go to any lengths to stop her from discovering their secret. It is up to her to save the Gasperilla Pirate festival, rescue a trapped innocent old man and a young friend she helped in getting the very job that would risk his life and career. With the help of the FBI, Vicki takes on a ruthless gang of villains who have disappeared with the ancient gold and left no trace the police can find.