The story of Cassandra Chamberlain, a brilliant scientist who becomes one of Earth’s last survivors after an alien attack.
As of May 2026, M.K. Eidem’s officially contains four books , with the latest installment, Stephanie’s Challenge , released in 2019. While many fans are eagerly searching for a fifth book, there is currently no official title or release date for an "Imperial 5". The Imperial Series Overview m.k. eidem serie imperial 5
Follows Cassandra’s niece, Victoria, as she grows up among the Carinians and finds her life mate in a high-ranking pilot. The story of Cassandra Chamberlain, a brilliant scientist
Additionally, an unrelated series by author titled " The Imperial Series " has five books, which may lead to mixed search results for this keyword. Status of Upcoming Releases While many fans are eagerly searching for a
M.K. Eidem has not officially announced "Imperial 5." Her most recent work in this shared universe was (Tornians Book 8), released in 2022. Fans typically monitor the author's official website or Amazon Author Page for news on future "Challenge" books. Imperial Series by M.K. Eidem
The Imperial series (also referred to as the Challenge series) is a cornerstone of Eidem’s science-fiction romance universe. It follows the survivors of Earth and their integration into the Carinian and Tornian empires.