The Last Twelve Verses of Mark presents a detailed examination of Mark 16:9–20, one of the most debated passages in New Testament scholarship. This scholarly work explores the textual history, authenticity questions, and theological significance of these concluding verses, which are absent from the earliest Greek manuscripts yet present in later copies and translations. The book investigates the manuscript evidence, considers various theories about their origin, and analyzes their content and meaning within the broader context of Mark's Gospel. It addresses why these verses were added, what they reveal about early Christian beliefs, and how their disputed status affects biblical interpretation and translation decisions. Essential reading for students of biblical studies, theology, and textual criticism seeking to understand one of Scripture's most contested passages.