What caused four recently bar mitzvahed middle-class youths to go on a crime spree of assault and murder in 1954? This book provides a compelling narrative retelling of the boys, their crimes, and a U.S. culture obsessed with juvenile delinquency. After ongoing months of daily headlines about gang shootouts, stomp-killings, and millions of dollars worth of vandalism, by the summer of 1954, America had had enough of juvenile delinquency. It was in this environment that 18-year-old Jack Koslow and the other three teenage members of the Brooklyn Thrill Killers committed their heinous crimes and achieved notoriety. The Brooklyn Thrill-Kill Gang and the Great Comic Book Scare of the 1950s exposes the underbelly of America's mid-century, the terrible price of assimilation, the uncomfortable bedfellows of comic books and juvenile delinquency, and the dystopia already in bloom amongst American youth well before the 1960s. Readers will be engrossed and horrified by the tale of the Brooklyn Thrill-Kill Gang whose shocking, front-page story could easily have been copy-pasted from today's online news sites. Author Mariah Adin takes readers along for a breathtaking moment-by-moment retelling of the crime spree, the subsequent interrogations, and the dramatic courtroom showdown, interspersed with expository chapters on juvenile delinquency, America's Jewish community in the post-Holocaust period, and the anti-comics movement. This book serves to merge the history of juvenile delinquency with that of the Great Comic Book Scare, highlights the assimilation of immigrants into America's white mainstream gone wrong, and complicates our understanding of America's "Golden Age."