God Of Thunder by Alex Archer

The provided text is comprised of excerpts from a novel titled "God Of Thunder - Alex Archer," which details the perilous adventures of archaeologist Annja Creed. Annja finds herself entangled in a dangerous quest for the mythical Norse artifact Mjolnir, or Thor's hammer, after a colleague, Mario Fellini, is murdered while trying to send her a mosaic containing clues to the treasure's location. Annja faces relentless pursuit from mercenaries, led by Dieter Humbrecht and hired by the wealthy Wolfram Schluter, who is also after the treasure and has involved his grandmother, Kikka Schluter, and the immortal Garin Braden. Annja teams up with her mentor, Roux, and the author Stanley Younts, eventually traveling to Latvia, where she also encounters Erene Skujans, Mario's love interest who possesses knowledge of folk magic and is determined to avenge Mario’s death.