The 39 steps has been adapted into a play. The film by Hitchcock is a more serious version than the play I have seen.
Three very good actors play a lot of characters. They are very funny and they have achieved to make the scenes which seem to be tragic very funny. To give you an example, we can't stop laughing when a character is about to die. But, I do not want to tell you more about it because you must see it and discover this surprising performance.
The Times December 14th, 2015