KateSherrod’s review published on Letterboxd :
Sumptuous costume drama with Dietrich at her most glamorous (her makeup dewy perfection even when she's been buried in dead leaves or has hair full of straw) and Donat at his most dashing. A lot of effort was made to make England look like Russia, and there's a lot of period detail. Lots of melodrama and a few improbable escapes, but a lot of economy of storytelling that we don't seem to get much these days. Well worth seeing!