Earth’s oceans are so vast, not even merfolk have explored everywhere. And for good reason.

An unexpected call from the CIA seems initially like a routine job, but Agent Michaels has a surprise for her.

At a nondescript Agency warehouse, Alex discovers something she never imagined possible and soon finds herself on the way to Atlantis, deep on the ocean floor halfway around the world.

Worse, the denizens of the fabled city are locked in a desperate fight for survival against an adversary older than human civilization... and they’re losing. If Alex gets caught up in the undersea war, she may never leave the ocean again.

No matter what happens, Agent Michaels’ little favor will change her life forever.

Silver Kingdom is the sixth and final book in the Alexis Silver series of underwater-themed mysteries and adventures, and is part of the broader Vampire for Hire world.