The work of married team Anna Neagle and Herbert Wilcox hasn't aged all that well, but this is an unexpected exception, an admirably realistic biopic of Odette Sansom, British spy, recipient of the George Cross and survivor of Ravensbrück concentration camp. It follows the standard special operations layout, but surprisingly the true events are hardly embellished, partly due to the influence of Odette herself. This means that the plot may feel a little undeveloped, but the film leaves a surprising impression of vérité. This is the role of Neagle's life, and she gives it a great shot, given her limitations, and Trevor Howard is as ever calm and understated and stiff of lip as the British leader of liaison with the Maquis who Odette would marry (and divorce) after the war. Tremendously moving and humbling of course, given the subject matter.