The Caretaker of Tethys Trench

Something vast and impossibly old is breathing at the bottom of the Tethys Trench—and marine engineer Dr. Aisha Rahman just woke it up. Miles beneath the surface, her expedition stumbles upon a submerged civilization guarded by technology no human mind designed. But Aisha isn't the only one who knows it's there. With a corporate rival closing in and the ocean itself turning hostile, she faces an impossible choice: protect a secret that could reshape humanity, or survive the deep.