In the world of space study, a project called The Committee on Human Endurance probes how the human body withstands pain and extreme physical stress, all in service of the space program. At the heart of this effort is Prof. Henry Hallson, an anthropologist who has designed a series of anonymous questionnaires to identify people with extraordinary survival capacity and uses fellow committee members as initial subjects in a quiet, unsettling screening process.
During a formal meeting, Hallson lays out a startling claim before the panel—chairman and biologist Prof. Jim Tanner, geneticist Prof. Margery Lansing, geneticist Prof. Carl Melnicker, physicist Prof. Talbot Scott (also known as Scotty), biologist Prof. Norman E. Van Zandt, and government liaison Arthur Nordlund. He asserts that someone among them possesses a superhuman intellect capable of influencing other minds, even within their intimate circle. When no one volunteers the truth, the idea is tested in a staged telekinesis experiment: a simple psi wheel is set in motion not by a single participant, but by the collective focus of the group, and the wheel answers with a spinning, almost reluctant motion.
That night, Hallson is found dead in the laboratory’s centrifuge room, a cryptic note bearing the name “Adam Hart” left nearby. Hallson’s widow, Sally Hallson, explains that “Adam Hart” was the name of her husband’s childhood friend, casting a shadow of personal history over the impersonal investigation. The authorities and Tanner begin to wrestle with a troubling possibility: if a superhuman power exists, it could be used to hide or manipulate truth, even within a tight-knit scientific team. Talbot Scott is quick to deny the very premise, while the police start to connect the dots to the strange gaps in Tanner’s past.
As the case unfolds, Tanner becomes the prime suspect when it emerges that all records detailing his early life have vanished without explanation. He experiences vivid, disorienting hallucinations and survives a psychic assault that seems aimed at driving him off the case. With the help of [Prof. Margery Lansing], he undertakes a journey to Hallson’s hometown to pursue the truth and discovers that Adam Hart is a real figure—a superhuman whose appearance elicits contradictory descriptions from those who glimpsed him, and whose commands were once obeyed by people years earlier.
The hunt for the remaining committee members intensifies. [Prof. Carl Melnicker] is murdered in cold blood, while [Arthur Nordlund] appears to survive another psychic attack. The investigation tightens its grip when [Prof. Norman E. Van Zandt] is revealed to have been an ally of Hart, only to be murdered himself. Tanner endures continued danger and, after a nerve-wracking pursuit, returns to the research center to confront [Prof. Talbot Scott], with the police closing in. Scott, overwhelmed by the idea that Tanner himself could be the superhuman, panics and is fatally shot by the authorities.
In the dramatic final confrontation, Tanner tracks down Nordlund, who has been playing a double game and is revealed to be Adam Hart in disguise. Hart presses his psychic power against Tanner, but Tanner taps into a stronger, awakened psychic ability of his own and kills Hart with a decisive, otherworldly force. The revelation lands with a heavy truth: Tanner is the superhuman uncovered by Hallson’s tests, and Hart’s fatal motive was to eliminate any rivals who might share the same extraordinary gifts.
In the end, the investigation leaves the door open to a troubling conclusion about the limits of human endurance and the dangers of testing it too far. The lines between science, power, and control blur as the participants confront the unsettling possibility that the human mind can be bent, and perhaps bent too far, by those who seek to push the boundaries of what is possible.
