For nearly nineteen hundred years, few have questioned the single authorship of Luke and Acts. A careful reassessment of the internal and external evidence, however, reveals this assumption to be built on a shakier foundation than was previously thought. Patricia Walters's innovative study offers a statistical analysis of Luke and Acts, pointing to the existence of highly significant differences in their prose style. In particular, a comprehensive survey and re-examination of the two books' least contested authorial stratum - their seams and summaries - brings to light ancient prose...