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. The novel was launched in Lucknow by Kaushal Kishore, Minister of State for Housing and Urban Affairs, Government of India. The launch was also attended by Shaista Ambar, President of All India Muslim Women's Personal Law Board In his interview with News Now, Sapan Saxena shared that "he has tried to explore the concept of sacred feminism with the context of a murder mystery" Source: Wikipedia (en)