The SEAL Cypher Series

Former Navy SEAL John Klade thought he’d left the shadows behind. But when the families of his old teammates are murdered, each marked with a trident wrapped in a serpent, Klade uncovers a deadly connection to a mission the U.S. Navy insists never happened.

This is the second volume in the series. A year after The Leviathan, John Klade has gone off the grid. When a terrorist bombing in Athens leaves behind a phoenix symbol intertwined with the trident, Klade realizes the Brotherhood isn’t gone — it’s evolved. Yale Symbologist, Annabelle Johansson, now on a sabbatical and lecturing in Rome, is recruited by an EU counterterror unit to decode the symbol. She learns that a new sect — The Order of the Phoenix Tide — has risen, believing fire can “purify what the Deep cannot.

Months after the Phoenix Protocol’s collapse, catastrophic oceanic anomalies begin — mass whale strandings, sonar blackouts, ships disappearing.

This is the fourth and final part of the series. The world teeters between chaos and control as governments weaponize fragments of the “Leviathan Signal” or “Echo” to create obedient soldiers. Through investigation and intelligence from Hawk, they had noted that three Phoenix Protocol scientists had disappeared after the Cross/AI hybrid (Leviathan) was destroyed. Dr. Eliza Chen, quantum computing specialist, Dr. Martin Webber, neural interface design, and Dr. Sophia Pavratilova, acoustic engineering. All worked under Kerrigan, all debriefed and supposedly monitored after The Odysseus incident.