Eterna and Omega by Leanna Renee Hieber - This is the second book in the series, begun in The Eterna Files. I'm using the synopsis for book 1 below, as I'm planning on reading it when I get back from my trip and don't want to spoil anything.
London, 1882: Queen Victoria appoints Harold Spire of the Metropolitan Police to Special Branch Division Omega. Omega is to secretly investigate paranormal and supernatural events and persons. Spire, a skeptic driven to protect the helpless and see justice done, is the perfect man to lead the department, which employs scholars and scientists, assassins and con men, and a traveling circus. Spire's chief researcher is Rose Everhart, who believes fervently that there is more to the world than can be seen by mortal eyes.
Their first mission: find the Eterna Compound, which grants immortality. Catastrophe destroyed the hidden laboratory in New York City where Eterna was developed, but the Queen is convinced someone escaped-and has a sample of Eterna.
Also searching for Eterna is an American, Clara Templeton, who helped start the project after the assassination of Abraham Lincoln nearly destroyed her nation. Haunted by the ghost of her beloved, she is determined that the Eterna Compound-and the immortality it will convey-will be controlled by the United States, not Great Britain.
The Sword of Midras by Tracy Hickman and Richard Garriott - This is a prequel novel to the Shroud of the Avatar video game by Portalarium. From their website: Shroud of the Avatar: Forsaken Virtues is a fantasy RPG that combines a single player narrative with a sandbox MMO created by a team that includes: Richard “Lord British” Garriott the creator of the Ultima series, Starr Long the Director of Ultima Online, and Tracy Hickman the [co-]author of Dragonlance.
Abandoned by the mighty Avatars and their Virtues, the people who remained were left defenseless in an untamed land. That is, until the Obsidians came. Through dark sorcery and overwhelming force the Obsidian Empire brought order to chaos, no matter the cost.
Aren Bennis is a Captain in the Obsidian Army who has seen enough of what a world without Virtue looks like and is willing to do whatever it takes to establish a lasting peace. But after finding a magical sword that only he can wield, a sword his trusted scout, Syenna, claims is a blade once used by the legendary Avatars, Aren is thrown into a far more unfamiliar battle. One fought with whispered words and betrayal instead of swords and arrows.
Running out of allies, Aren's only hope for survival is to discover the true nature of the ancient weapon he wears at his side. In order to do that, Aren will have to turn to the empire's enemies and, in doing so, he will discover what order at the hands of the Obsidians really means.