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A long-lost experiment of unknown intent. . .
A hidden room in a vast seaside estate. . .
An investigator marked for danger. . .

On a sprawling estate on the coast of Rhode Island, at the nation’s oldest and most prestigious think tank, an unfathomable tragedy takes place. No one knows what to make of the disturbing evidence left behind. Then reports begin to surface of increasingly bizarre behavior among the organization’s distinguished scientists.

Called upon to investigate these strange happenings, history professor and analyst of inexplicable phenomena Jeremy Logan comes across an ingeniously concealed room in a long-dormant wing of the mansion. What he discovers within may provide answers -and, in the process, unleash a new wave of catastrophe.

Reviews

Chilling. . . . Child makes the most of the creepy setting, his unusual lead character, and an intricate plot.
Publishers Weekly
Electrifying . . . One of Child's best yet.
Library Journal (starred review)
Intriguing. . . . Lincoln Child is a master at mystery plots.
The Florida Times-Union
Child's characters are first-rate, as is his writing.
The Washington Post Book World
The genius-touched Child writes paragraphs of polymathic detail. . . . Terrific.
Kirkus Reviews
[A] very imaginative story for those who prefer a soft blending of mystery and paranormal.
Booklist
Lincoln Child's novels are thrilling and tantalizing.
Vince Flynn, #1 New York Times bestselling author of The Last Man