Dorothy Dixon and the Double Cousin

"Dorothy Dixon and the Double Cousin" by Dorothy Wayne is a captivating mystery where a courageous young girl named Dorothy Dixon steps into danger to rescue her cousin Janet Jordan from a perilous plot. After Dorothy is mistaken for Janet in a chance encounter with Janet's fiancé, Howard Bright, she learns Janet is being held prisoner due to her father's involvement with a shady organization. Determined to help, Dorothy bravely agrees to impersonate Janet as part of a Secret Service plan, leading her into a world of coded messages, thrilling chases, and high-stakes deception as she risks everything to save her cousin from an unknown fate.