My expectations weren’t entirely met with this somewhat incomplete mystery. The film centers on "Mayano" (Vincent Lindon), essentially a contemporary “Van Helsing,” tasked by the Vatican to look into assertions made by "Anna" (Galatéa Bellugi). She claims to have been visited by the Virgin Mary. Upon arriving in the small, rural town, he encounters a girl who genuinely believes this, and so do many of her neighbors; however, others are openly doubtful. He finds his usual methods of remaining detached and unbiased challenged as the enigma unfolds and the demands on him increase—and not for just any outcome. While trying to confirm or deny what’s happening, Anna is facing more strain from those looking to profit from the devotion and naiveté of others. This presents a real problem for "Mayano." The premise offers a contemporary spin on a familiar narrative, but director Xavier Giannoli unfortunately plays it too cautiously when examining this blend of faith and skepticism, and Lindon doesn’t quite possess enough magnetism to carry this rather long drama as the plot developments feel predictable. There's a capable supporting ensemble, and young Bellugi provides instances where you can’t help but sympathize with the immense responsibility placed on someone so young, though she isn’t present frequently enough or developed sufficiently for us to truly connect with her story. The photography has a documentary quality that I felt accurately captured the overall tone—it's rather devoid of feeling, verbose, and overly clinical.

Source on TMDB