CONTAINS SPOILERS FOR WORLD WAR Z*
Book-to-film adaptations can be tricky. You can’t slavishly recreate the original source material, as much as some fans may want you to** — it’s just not feasible. For one thing, trying to fit a 400-page book into a 2-3 hour movie is just not possible without trimming some of the fat. Minor subplots and irrelevant scenes get left out, while some characters are either merged with others or cut out altogether.
World War Z found a very convenient workaround for all that by having almost nothing to do with the source material.
Omskivar Reviews 