Covenant of the Dead

Three nuns are found murdered in the attic of a quiet Boston convent.

There are no witnesses. No shell casings. No sign of forced entry.

The only items missing are their rosaries.

The killings send shockwaves through the city, baffling police and drawing intense media attention. With no clear suspects and almost no physical evidence, the case quickly grows cold-until an unlikely voice claims to have the answer. A well-known Boston medium announces that her spirit guide has revealed the identity of the killer: a troubled priest armed with an antique revolver. When a popular newspaper columnist publicizes the claim, the story spreads like wildfire, igniting a citywide frenzy fueled by fear, rumor, and belief in the supernatural.

Suddenly a priest's reputation-and possibly his life-hangs in the balance.

Harvard professor of religious history Cal Donovan, often called the Vatican's unofficial "pope whisperer," is drawn into the mystery alongside Elisabetta Celestino, a formidable former Vatican insider with deep knowledge of the Church's hidden politics. Skeptical of the sensational claims yet intrigued by the strange details surrounding the murders, the two begin their own investigation into what really happened in the convent attic.

Their search leads them deep into Boston's modern spiritualist circles-séance parlors, psychic gatherings, and shadowy believers who insist that the dead still speak to the living. As Cal and Elisabetta sift through historical records, antique weapons, and forgotten documents, a darker story begins to emerge. The clues point not only to an unusual weapon and an elaborate deception, but to a long-buried feud stretching back more than a century.

At the heart of the mystery lies the controversial world of Spiritualism, the nineteenth-century movement that claimed the ability to communicate with the dead. Its most famous defender was none other than Sherlock Holmes creator Arthur Conan Doyle, whose passionate belief in psychic phenomena helped spark one of history's most enduring cultural debates: are séances clever frauds-or glimpses into something beyond the natural world?

As the evidence builds, Cal and Elisabetta find themselves facing a disturbing possibility. Either someone is orchestrating a brilliant and dangerous hoax that manipulates grief and belief... or the messages coming through the séance rooms may not be fraud at all.

With time running out and an innocent man under growing suspicion, the two investigators must untangle a web of faith, deception, and vengeance before another life is destroyed.

From international bestselling author Glenn Cooper, Covenant of the Dead is a gripping standalone Cal Donovan thriller that blends historical mystery, murder, and religious intrigue. Perfect for readers who enjoy the intellectual puzzles of Dan Brown and the fast-paced conspiracies of Steve Berry, this suspenseful novel explores the thin line between belief and truth-and the unsettling question of whether the dead might still have something to say.