Sapan Saxena is an Indian author, best known for his novels Finders, Keepers, UNNS-The Captivation and The Tenth Riddle

The Tenth Riddle is the third book by Sapan Saxena. It was released in October 2021 and is published by Locksley Hall. The novel follows murder of erstwhile princess of Goner, Rajasthan and how her murder is linked to a deep rooted secret in the history of Indian sub-continent. The novel deals with mythological themes, specifically centered around the prime Hindu goddess Adi Parashakti or Mahadevi and her ten forms of Mahavidya.