I'm not sure what the low ratings are about but they almost made me skip this film and I'm glad I didn't. This isn't a 10, but, in my book, a solid 7. That's my lower limit of determining if a movie is worth seeing. This one is. The performances are solid, Judi Dench is brilliant and lovely, Izzard is compelling and the story is solid. If anything I think the gentle, slow pace and tone may bother some people but I thought it built well to the thrilling, twisty, hold your breath ending.