I had a fun time with this one! 'The Thirty Nine Steps' gave me a lot of entertainment. Robert Powell puts in a top performance, as does John Mills; the whole cast are good, in fairness. Pacing is on point and the music is stellar. There are some nice set pieces too, namely on the railway and at Big Ben. I also really enjoyed the adventure feel. One of many adaptations of John Buchan's novel, I see. This is my first experience of it in any form, I evidently chose a good one to start with. I ought to check out the other three (!) pictures at some point, especially the first that was directed by Alfred Hitchcock; I am still yet watch a movie of his, poor from me!