We take for granted today the tremendous power of the Supreme Court to interpret our laws and overrule any found in conflict with the Constitution. Yet our nation was a quarter-century old before that power of "judicial review" was fully articulated by the Court itself in Marbury v. Madison (1803). William Nelson's concise study of that landmark case provides an insightful and readable guide for students and general readers alike. On the surface, the case itself seems a minor one at best. William Marbury, a last-minute judicial appointee of outgoing Federalist president John Adams, demanded redress from the Supreme Court when his commission was not delivered. But Chief Justice John Marshall could clearly see the danger his demand posed for a weak court filled with Federalist judges. Wary of the Court's standing with the new Republican administration of Thomas Jefferson, Marshall hit upon a solution that was both principled and pragmatic. He determined that while Marbury was justified in his suit, the law on which his claim was based was in conflict with the Constitution. It was the first time that the Court struck down an act of Congress as unconstitutional, thus establishing the doctrine of judicial review, which designates the Court as chief interpreter of the Constitution.