A few thoughts: As much as I love Cushing's iconic horror performances (Frankenstein, Van Helsing, Sherlock Holmes, etc.), this movie proves more than anything that he was an incredible actor with tons of dramatic range outside of his horror wheelhouse. His nervously stoic performance is one of the best of his entire career, as you see his character change and naturally develop over the course of only an hour or two. As far as genre credibility, I suppose this doesn't fully fit inside my usual parameters, but as a Hammer production with a small cult following, I suppose that's all that's needed for me to write about it. Very intense and cleverly written, this movie is a fantastic acting showcase for both of its leads, but the acting never overshadows how sharp the story is. I loved the finale, which threw me off-guard and left me continually anticipating twists that I wasn't able to predict. Heist movies are often thrilling, but rarely this emotionally satisfying and cleverly character-based. It's only 80 minutes, and doesn't waste a moment, but somehow never feels rushed. A pretty great movie, and one that makes me wish Hammer produced more like it.
Who would I recommend it to? People who like great thrillers. This is a top notch bank heist movie that you can even watch around Christmas.