The narrator, Sid Silver, is on his way to interview Judd Steiner, whose parole is being considered after serving a 30-year sentence for the thrill killing of 12-year-old Paulie Kessler. Judd Steiner and his cohort Artie Straus were sentenced to life plus 99 years for the infamous murder that was covered extensively by newspapers worldwide. As a university classmate of Judd and Artie's, earning his way through college working at a newspaper, Sid Silver had been pivotal in finding incriminating evidence in the case. Sid now wonders whether his interview of Judd may affect his upcoming parole hearing. Artie Straus had been killed by an inmate years prior. In flashback to the time of the murder, close friends Judd Steiner and Artie Straus each believe they fit
Nietzsche’s philosophy of a “superman” (
Übermensch), thus are above the law. From wealthy, socially prominent families, both are brilliant graduate law students, under age 20, who indulge in petty crimes for the thrill of it. To please Artie, to whom Judd is
submissive, Judd goes along with Artie's increasingly criminal demands, such as cheating at cards, smashing store windows, stealing cash and a typewriter from a fraternity house, setting fires, stealing cars, and flirting with an auto hit-and-run killing. Both believe themselves able to outsmart the “inferior” persons surrounding them. They have a pact where Judd indulges Artie's criminal demands in exchange for Artie's sexual indulgence. To demonstrate their "superior intellect" and convinced that laws do not apply to them, Artie and Judd decide to commit the “perfect crime” for the thrill of knowing the solution while the victim's family, reporters, and police try to solve the kidnapping and murder. Cruising in their car for a victim, they lure Paulie Kessler, on his way home from school, and kill him. A neighbor of the Kesslers', a cocky Artie “helpfully” engages with reporters and investigators, spitefully giving them false theories and leads. Asked about suspicious teachers at Paulie Kessler's school—which Judd and he had attended four years previously—Artie maliciously suggests a suspected teacher had made sexual advances to his younger brother. When assigned a beat about a drowned boy that was found in the park, Sid Silver discovers the eyeglasses found near Paulie's body, assumed to be his, are too large to be Paulie's and are key evidence. The glasses have a distinctive hinge, with only three pairs purchased in the Chicago area, Judd having purchased one pair. Judd, whose glasses dropped out of his pocket at the scene of the crime, is unable to produce his. Questioned, Judd claims he dropped them a few days earlier when bird watching with his group of
ornithology students. It now becomes urgent to dump the typewriter stolen from the fraternity house that they used to type the ransom note sent to the Kesslers. Judd befriends Sid's girlfriend, Ruth, to whom he is attracted for her intellectual capabilities. Eager to prove his ability to commit crimes independent of Artie, Judd attempts to rape Ruth, citing his Nietzschean philosophy, which she refutes. Sensing Judd's ambivalence and vulnerability, Ruth forgives the attempt and continues to see Judd, confessing to Sid her attraction to Judd's intellect and wounded psyche. Giving each other
alibis when Judd is linked to the typewriter used on the ransom note, Judd and Artie claim to have been out the evening of the murder with girls they picked up named May and Edna whose full names they do not know. They had rented a car that couldn't be traced to them for the crime, but their alibi involved riding around in Judd's car. The alibi falls apart when the Steiner
chauffeur unintentionally reveals that he was working on repairs to Judd's car the entire evening that Judd and Artie claimed to be cruising in it with the girls. Eventually, the “superior” Artie cracks under interrogation and implicates Judd, who then confirms the details of Artie's confession but insists that Artie committed the actual murder. The glasses and recovered typewriter are eventually two key pieces of evidence linking Artie and Judd to the crime. Famed attorney Jonathan Wilk takes their case, saving them from
hanging by making an impassioned
closing argument against
capital punishment. ==Film adaptation==