When Chief Inspector Andreas Kaldis' longtime assistant, Maggie, returns to her ancestral home on Ikaria for her 104-year-old grandmother's funeral, she quickly realizes not only was Yiayia likely murdered, but that a series of other long-lived Ikariots had recently died under the same suspicious circumstances. Back in Athens, Andreas and his chief detective, Yianni, pursue a smuggling and protection ring embedded in the Greek DEA, and its possible involvement in the assassination of an undercover cop. But then Maggie and Yianni uncover a connection between their respective leads in the elder-killings on Ikaria and the DEA corruption case, and they realize that there are international intrigues far more dangerous at play than anyone had imagined.

When Athens journalist Nikoletta Elia disappears while on assignment on the island of Naxos, her editor calls on Chief Inspector Andreas Kaldis to investigate. Sent to report on the conflict between preservationists and advocates for expanded tourism, Nikoletta is approached by a fan who takes credit for several suspicious deaths she'd reported on in the past. The assassin claims to have abandoned that life, and convinces the reporter to write about him and his murderous exploits for hire. Kaldis sends his deputy, Yianni, to look into her disappearance when an unidentified body is found at the base of a cliff. Who is the mysterious corpse, and where is Nikoletta?

The case begins for Athens' Chief Inspector Andreas Kaldis with a literal bang when a corrupt former police colonel who runs a protection racket on Mykonos is gunned down. Suddenly, Kaldis is face-to-face with Greece's top crime bosses on an island whose natural beauty and reputation as an international playground belies the corruption lurking just beneath the surface. While Kaldis and his Special Crimes unit wrestle for answers, his wife, Lila, meets an American expat named Toni, a finder of stolen goods and a piano player in a gender-bending bar. As Lila and Toni bond over a common desire to mentor young island girls trapped in an exploitative and patriarchal culture, they soon find that their efforts intersect with Kaldis' investigation in ways that prove to be dangerous for all involved.

When a government policy accelerates the surge of refugees onto his island, Mihalis Volandes rises to prominence in relief efforts he sees as growing increasingly ineffectual. One evening, after working to stir up support for his breakthrough plan to strike at the heart of the lucrative refugee trafficking trade, he returns to his mansion and falls victim in his own garden to a swishing sword. A refugee-turned-local-aid-worker named Ali Serra is found at the scene and is swiftly arrested. Volandes was a prominent citizen and the crime particularly gruesome. Could it be terrorism or something else? But whether Ali is guilty or framed, Chief Inspector Andreas Kaldis can't ignore a powerful motive for the murder.

When a young demonstrator is publicly singled out and assassinated by highly trained killers in the heart of protest-charged Athens, Chief Inspector Andreas Kaldis is convinced the killing was meant not to take out a target, but as a message. A message from whom? To whom? And why? Kaldis’ search for answers leads him and his team to the breathtakingly beautiful island of Santorini, heralded in legend as the lost island of Atlantis, and to eavesdrop on a hush-hush gathering of Greece’s top military leaders looking to come up with their own response to the overwhelming crises and uncertainties their country faces. Is it a coup d’état, or something else?