In English, M.K. Eidem’s flagship collection is officially known as the or the "Tornian Empire Series." As of late 2025, the core, mainline entries in this universe include:
The online community for the Imperium series is vibrant. On Goodreads and Reddit’s r/ScienceFictionRomance, the most popular theories for include:
Here is the definitive answer for fans eagerly awaiting the next chapter.
: Many readers found the birth and introduction of Grim and Lisa's daughter, Adora, to be deeply moving, with several reviews mentioning the need for tissues during the first chapter.
The is Eidem’s most extensive and best‑known body of work. It shares some thematic elements with the Imperial books—tough alien heroes, human heroines, and fated mates—but the world is darker and the stakes even higher. m.k. eidem serie imperial 5
As of mid-2026, M.K. Eidem has a fifth installment in the Imperial/Challenge series. According to the German book site buechertreff.de , which tracks series releases, the Imperial series has remained at four volumes for quite some time.
Because Stephanie's Challenge left several open-ended political conflicts within the Coalition, readers have been actively looking for a fifth installment to answer lingering questions:
Have you read the first four books in the Imperium series? Which character do you hope gets their story told in "Serie Imperial 5"? Let us know in the comments below!
Further expands the universe with high-stakes romance. In English, M
The Imperial series (also called the series) is set after the destruction of Earth by an alien race known as the Regulians . The survivors are rescued by the Carinians , a tall, warrior‑like species who belong to a larger Coalition of United Planets . The stories focus on human women who must navigate not only the trauma of losing their homeworld but also the politics, prejudices, and passions of their new alien allies.
Here, Eidem takes us to the fringes of the Empire. Sasha is a survivor of a brutal attack, and Mikarios is a lord consumed by vengeance. This book ends with a massive cliffhanger involving a conspiracy against the throne and a pregnancy that could change the line of succession.
Check out the series (starting with Grim ) for a similar vibe of powerful alien warriors finding their match in human women.
| Aspect | Status | |:---|:---| | Current Number of Books | 4 | | Official Announcement for Book 5? | No | | Author's Current Focus | "Tornians" series | | Fan Demand | High | : Many readers found the birth and introduction
The first four books focused on the parents: Grim, Wulf, Ynyr, and Mikarios. is widely expected to jump forward in time slightly. The children—most notably Princess Rayna (daughter of Wulf and Tamara)—are now adults.
Currently, the Imperial series formally spans : Cassandra's Challenge (2013) Victoria's Challenge (2013) Jacinda's Challenge (2015) Stephanie's Challenge (2019)
The Will of Imperium (The Imperial Chronicles Book 5) Kindle Edition