# What this book covers
Build – and Steal – the World's Most Dangerous Weapon by Steve Sheinkin is a nonfiction account aimed at middle-grade and teen readers that traces how the atomic bomb was developed, protected, and ultimately copied. The narrative centers on the scientific breakthroughs around fission, the political and military decisions that launched the Manhattan Project, and the parallel work by other nations.
# Main characters and institutions
The review singles out J. Robert Oppenheimer as the public face of the Los Alamos effort and General Leslie Groves as the military head. Sheinkin presents Los Alamos as a gathering of brilliant but difficult minds. The book also follows international threads: German research that kicked off the race, Allied sabotage operations (including the operation against the heavy-water plant at Vermark, Norway), and Soviet infiltration of Manhattan Project information.
# Plot arc in brief
# Tone and presentation
The reviewer describes the book as "sprawling, complex, multifaceted," but accessible for its intended age range. Sheinkin is noted for communicating personalities alongside events. The edition cited is Roaring Brook, 2012, 241 pages plus notes, and the reading level is listed as middle grades (ages 10–12) with a recommendation of ages 10 and up.
# Content cautions for readers and educators
The review warns that numerous quoted passages contain profanity and mild vulgarity (for example, "son of a bitch"). The text also reports an instance of Oppenheimer's adultery with no further commentary. These elements are flagged so parents and teachers can decide if the book suits particular students.
# Why the reviewer recommends it
Despite the story's complexity, the reviewer argues it is worth telling because the historical consequences remain close to modern geopolitics. Sheinkin's prior work on historical figures and events is cited as evidence of his skill at making complicated nonfiction engaging for young readers.
# Bottom line
Bomb is a detailed, readable introduction to the Manhattan Project and the early atomic age for middle-grade and teen readers. It balances science, military decision-making, sabotage operations, and espionage, but includes material some adults may want to pre-screen for younger readers.