Quantum chromodynamics (QCD) is the theory explaining the strong nuclear force that binds together the components of the atomic nucleus. It is one of the four fundamental forces of nature that control the universe in which we live. This absorbing book covers the ideas and stories behind QCD, the successes and the puzzles, the unsolved mysteries and the characters involved. The subject is discussed in an accessible and entertaining way, assuming of the reader only the minimum physics and mathematics background knowledge. It will be a fascinating read for anyone interested in science and will also provide a solid introduction to the subject for students embarking on particle physics courses.