In World War II Great Britain a dedicated crew of operating room nurses and doctors continue to perform their vital tasks amid the stress of German bomb attacks. It's a close-knit ensemble whose lives intersect in a multiplicity of ways but take a dramatic turn on the operating table one fateful morning. Enter Alastair Sim in the person of a Scotland Yard detective with whimsical, unorthodox investigative methods. Much due to the performance of Sim it's a delightful romp of a mystery which falters a bit toward the end but nonetheless delivers solid entertainment.