Roat orders Talman and Carlino to help him try to find the heroin-stuffed doll. At one point the young character Gloria has to smash all the light bulbs in the hall. Gloria stands outside, and he closes the door. This successful mystery-thriller was held over for an additional performance to benefit the McLean County Heart Association. Mike picks up the phone, then hands it to Roat. The man who'd been watching Lisa then roughly escorts her away. The light in the enlarger goes on for exactly two seconds.
But when Roat kills his associates, a deadly game of cat and mouse ensues between the two. After Talman leaves, Gloria sneaks into the apartment carrying the doll, which she stole earlier. The Venetian blinds are nearly closed downward slant. However, having anticipated that the others would turn on him, Roat has instead killed Carlino by running him over. She tells Susy there is no police car outside, and Susy discovers the doll.
While in the apartment, they find the body of Lisa hidden in a wardrobe. The complexity of this show meant that four dress rehearsals were needed to work through many of the possible mistakes in cueing the special effects. Susy tells Mike to call the police. However, having anticipated their plan, Roat has killed Carlino instead, and he then kills Mike on the doorstep of Susy's apartment. She also pours a chemical into a bowl. On the closing night of the run, the two policemen played by actors Mark Wright and Dave Montague accidentally did break down the door from the frame to get to Susy.
In the beginning there was too much smoke powder and it created a mini explosion of smoke like a genie emerging from a bottle, instead of the slow wafting of smoke from a cigarette catching paper on fire. It is dull and rainy outside. What Roat, Talman and Carlino may be unaware of is that Susy does have eyes in the form of the Hendrix's precocious adolescent neighbor, Gloria, who knows more about the missing doll than she initially lets on, and that Susy may have certain advantages in life due to her blindness. While her faith does waver, she does trust him. Some time afterward, small-time con artist Mike Talman Richard Crenna and his partner Carlino Jack Weston arrive at the basement apartment where Sam lives with his blind wife, Susy Audrey Hepburn. The blackout arrangement is over both windows, both doors are closed, lights are off in the hall and bedroom.
Please note this figure is a rental accruing to distributors. He is disguised as Harry Roat Sr. Susy finally agrees to give him the doll but throws a chemical at Roat's face and unplugs the safelight as the apartment is plunged into darkness. Originally produced on Broadway in 1966, it was adapted the following year into a film directed by and starring as Susy and as Roat. Once Susy is alone, the criminals begin an elaborate con game: In order to gain entry into the apartment, Talman arrives posing as a friend of Sam's, Carlino poses as a police officer, and Roat poses first as an old man and then as the man's son.
After discovering Lisa's dead body hanging in a garment bag, Talman and Carlino want to make a quick exit, but Roat points out that they have left their fingerprints all over the apartment, while he has worn gloves. She has another one when noticing the. He is followed by Susy and Mike. The police arrive with Sam and Gloria, and Susy is found, unharmed, behind the refrigerator door. Carlito, alternately encourage or scare Susy into telling them where the doll is hidden. Each of the characters, therefore, gets misted with water before entering. The benefit was a financial success for the McLean Country Heart Association.
The battle ends when Roat obtains light by opening the refrigerator, whose door he props open with a rag in the hinge. On arrival she notices a criminal waiting for her at the arrival zone whom she hasn't expected. Talman has spent the most time with Susy and he has come to admire her for her quiet strength and ability to stand up to the three criminals despite her disability. There was an old fashioned turntable in the room that really played during the show, as well as an old rotary phone that rang on cue—one of the most vital of cues to the plot. Alan Arkin gives the performance of a lifetime as the cool, calm, collected psychopath who truly enjoys hurting people.
In all of this the designer had to consider the emotional values imparted by the different colors and intensities of light. Since Susy can't see the disguises, there's really no point in wearing them, and in fact, she recognizes that he is the same person, because she isn't distracted by them. After disposing of the body, the thugs return while Susy is present to continue their search. They have traced the location of a mysterious doll, which they are much interested in, to the Greenwich Village apartment of Sam Hendrix and his blind wife, Susy. He's just trying to pay off his debt to a loan shark, and does everything he can to avoid actually hurting Susy.
Later, she's found dead by her former associates, Mike and Carlino, small-time hoods, in Susy's basement apartment. The signal sets off the burning by sending an electric charge through a copper wire which ignites a bit of smoke powder. Intent on acquiring the doll, Roat chains the door shut in the dark apartment, pours gasoline on the floor, and sets a piece of newspaper on fire. Mike gives her the number for the phone booth across the street as his own after falsely warning her of a police car outside. Unfortunately, he's wrong — Roat killed Carlino before Carlino got the chance, and promptly kills Mike, too. The scene switches to the arrival of police cars outside the apartment.
As Susy is still adjusting to her recent blindness, Sam does whatever he can to make her as self-sufficient as possible, which she often still resents. As Talman prepares to leave, pausing to say something to Susy as he stands in the doorway, Roat suddenly appears and stabs him in the back. Hall to remember in the early stages of rehearsal was that she must show Susie as fragile at the beginning of the play, but extremely strong by the end of the show. Gloria tells Susy she can signal her by banging on the pipes. She breaks a lamp in frustration, which gives her the idea to do the same to all the lights.