Stark Munro Letters is a fictional epistolary novel written by Sir Arthur Conan Doyle. The book comprises a series of letters written by the title character, Stark Munro, to his friend and mentor, Herbert Swanborough. The letters chronicle Munro's experiences and challenges as a young man starting out in life. He faces financial difficulties, romantic entanglements, and doubts about his faith. Through it all, Swanborough provides Munro with guidance and support. The book offers insights into the struggles and triumphs of young adulthood and the importance of friendship.