False blindfold

The False blindfold is a dark green eyeshade that Tommy Beresford uses to stage blindness as part of his detective persona. First introduced as a carefully handled prop in the International Detective Agency offices, it helps persuade a client that Tommy is blind; later, an impostor exploits the same disguise by making Tommy wear it over a lethal electrified floor. The eyeshade’s double use makes it both theatrical equipment and a weapon of misdirection: Tommy’s apparent impairment conceals his sight, while his captor’s confidence in that impairment nearly turns the performance into a real death sentence.

Appearance and Preparation

Tommy introduces the eyeshade during a demonstration of detective exercises for Tuppence Beresford. He takes the formidable dark green object from a drawer and adjusts it with care, then draws out a watch whose broken glass has prepared the way for another part of his act: a supposedly sightless man feeling its face with sensitive fingers. The staging is deliberate and rehearsed, down to Tuppence’s warning that his handling of the watch nearly removes its short hand.

The prop belongs to the wider performance culture of the agency. In its private office, Tommy sits as the pseudo Mr. Blunt behind a substantial desk, with a telephone at his elbow; he and Tuppence have rehearsed telephone effects, and Albert has received instructions too. The carefully arranged office and the eyeshade both help make detective work convincing to clients. The object is not a medical aid but an instrument of role-play, prepared to make a false identity legible to other people.

A False Blindness for a Client

When a visitor arrives seeking help, he recognizes Tommy as Mr. Blunt and asks whether an accident has affected his eyes. Tommy answers that he is completely blind and invokes the familiar figure of the blind detective. The eyeshade gives that claim a visible form, allowing Tommy to turn a staged disability into an immediate credential rather than an obstacle to his authority.

At the restaurant, Tommy begins to remove it, explaining that artificial light had made it necessary there. The supposed Duke stops him sharply and presses a pistol against him. He reveals that he is not the celebrated Duke of Blairgowrie but a ham merchant who has lost his wife, and that he borrowed the Duke’s name to secure Tommy’s company. The eyeshade has helped draw Tommy into the encounter, but the impostor now takes control of what it means: Tommy must keep it on, because the captor intends to make blindness literal within the trap.

The Electrified-Floor Trap

The captor explains that the floor is metal, with small projections that become deadly when he switches on the current. Tommy’s hands are unbound and his cane returned, but the eyeshade must remain in place. The captor frames the ordeal as a version of Blindman’s Buff: Tommy is to find the door without seeing the dangerous knobs, while the armed man watches for any attempt to remove the shade. The object’s earlier theatrical function is thus inverted. It had helped Tommy claim professional distinction; now it is imposed on him as the condition of a lethal game.

Tommy appears pale but determined, and asks whether he has any chance. When he uses his cane to threaten the captor, the man drops the sharp point and springs back, still confident that sight gives him the advantage. The confidence rests on a false assumption. Tommy reveals that the eyeshade is fake and that he can see perfectly. He had meant to use it to deceive Tuppence, beginning with deliberate mistakes before producing impressive detective work later in their lunch. He had also understood that his present opponent would not play fairly and would not let him survive a genuine attempt to cross the floor blind.

Exposure and Reversal

Tommy’s disclosure changes the balance of the scene, but it does not end the danger through the prop alone. The captor, enraged, rushes forward and forgets to watch his own footing. He steps onto the electrified floor; a blue crackle flashes, and he falls. The eyeshade has made the attempted killing possible by concealing Tommy’s sight from his enemy, while the enemy’s belief that Tommy cannot see helps provoke the fatal mistake.

Across these uses, the object’s meaning depends on who controls the performance. In Tommy’s hands it is a prop meant to mislead an audience and enhance a detective role; in the captor’s hands it becomes a forced blindfold that threatens to convert a fiction into actual helplessness. Tommy survives because the claimed blindness is not real, and because he recognizes that his captor’s game is not governed by fair play. The false eyeshade therefore concentrates the episode’s central reversal: the person presumed unable to see has the decisive knowledge, while the man who trusts his own vision fails to see the danger beneath him.