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Thomas cuts off his own hand in the library

I Know This Much Is True

Thomas cuts off his own hand in the library while living at Horizon House, turning a serious mental-health crisis into a bodily act he understands through religious prophecy. The event becomes a hinge between his belief that he has a mission to heal the world and the institutions that judge him a danger to himself and others. Its consequences extend beyond the immediate loss: Thomas is confined, his prospects for community living are reconsidered, and a review board ultimately orders him held for a year.

Circumstances and Immediate Aftermath

The account identifies a concrete circumstance preceding the act: Thomas had been living at Horizon House, stopped taking his medication, and went to the library, where he cut off his hand. The available narration does not detail the act itself. Instead, it later returns to its effects and to the meaning Thomas assigns it. This distinction matters: the event is presented as a rupture in his life, but not as an isolated incident separable from his illness, interrupted treatment, and subsequent confinement.

Dominick places the library incident in a longer sequence of crises. A panic attack had led Thomas to trash their jointly owned typewriter in May of the previous year; the first psychiatric lockup followed a conversation about Angie ten months later. By then, the war had escalated and people had walked on the moon, while Dominick recalls trying not to recognize how far the crisis had advanced. The chronology marks the hand amputation as part of a developing history rather than the beginning of Thomas’s difficulties. It also shows Dominick looking back from the later hospitalization, aware that warning signs had accumulated before the family faced the full consequences.

Thomas’s Explanation of the Sacrifice

Afterward, Thomas does not speak of his hand only as an injury or a practical loss. When Dominick struggles to ask how he is adjusting, Thomas redirects the question toward his brain and says he thinks the water might heal it. He draws on biblical images of the river of life and the tree whose leaves bring healing, then insists that he followed a religious command and cut off his hand to heal the nations. The bodily act has become, in his account, a sacrifice with a purpose beyond himself.

That explanation brings the event’s central contradiction into view. Thomas imagines the severed hand as part of a mission to restore others, while the people around him must reckon with the danger and damage that the act demonstrates. When Dominick urges him to answer Lisa Sheffer’s question rather than continue with biblical language, Thomas reacts sharply: to him, the religious explanation is an answer, not an evasion. Dominick, meanwhile, is trying to secure his brother’s release and fears that the same language will undermine that effort at a hearing. Their exchange shows how the act continues to govern conversation after the physical crisis: it is at once Thomas’s account of what happened and an obstacle in the legal process shaping what happens next.

Confinement and Review

Thomas’s admission to Hatch begins under a Physician’s Emergency Certificate initiated by a surgeon at Shanley Memorial. The certificate allows the hospital fifteen court-ordered days to observe whether he presents a danger to himself or others. Lisa Sheffer tells Dominick that this initial period cannot simply be overturned that day, leaving him frustrated and with little immediate control over his brother’s confinement. The emergency hold is therefore both a response to the crisis and the start of a formal process that places Thomas’s liberty under review.

The later decision is more extensive. The Psychiatric Security Review Board votes unanimously to retain Thomas at Hatch for one year, finding that he has shown himself potentially dangerous to himself and others. His case is scheduled for another review in October 1991, when the board is to decide whether he can be released or should remain for a second twelve-month period. Lisa Sheffer asks for a follow-up review after six months rather than waiting the full year. The sequence moves from a fixed fifteen-day observation period to a year-long commitment subject to review, making the consequences of the library event persist well beyond the act itself.

The board’s procedures belong to a politically charged system. Lisa Sheffer explains that the Jimmy Lane case, in which a man on a supervised day pass from Westwood killed a child, intensified public hostility toward the insanity defense and people with mental illness. After Lane was found not guilty by reason of insanity, political pressure mounted; the governor fired the commissioner and the department was reworked, producing the Psychiatric Security Review Board. This history does not make Thomas’s case equivalent to Lane’s. It does explain the atmosphere in which decisions about risk, confinement, and release are made, and why a finding of potential danger carries institutional weight.

Narrative Significance

The event is filtered through Dominick’s retrospective narration, which connects the library act to later scenes of hospitalization, argument, and attempted release. Its meaning consequently remains divided. Thomas gives it a prophetic and sacrificial purpose; the hospital and review board treat it as evidence relevant to danger and continued care; Dominick encounters it as both a fact he cannot undo and a barrier he must navigate to help his brother.

The later discussion of water makes that division especially clear. Thomas hopes it can heal his brain and links it to scriptural images of life and restoration, but the conversation does not establish that the water will do so. Instead, Dominick’s tears and difficulty finding words register the distance between Thomas’s interpretation and the family’s immediate reality. The amputation is thus not resolved by a single explanation: it remains at once an act Thomas understands as service, the consequence of a crisis that had worsened after he stopped taking medication, and the turning point after which institutions determine where he may live.