London by Night [1937] [DVD]

From imdb: Here is a film that brought waves of nostalgia to an old movie buff who usually never forgets a film but often cannot remember the titles of something I have not seen in 50 years. I viewed it by chance on TCM and as soon as I saw the Umbrella Man I knew it was an old favorite from childhood. I am constantly drawn to any film about London and this was no exception. It contains much of the usual elements of period London, the constant fog, Big Ben, elegant town house, eerie Thames River, bumbling police, pub, two lovely ladies and a semi-comical newspaper man protagonist. However it was the bone-chilling Umbrella Man that made the indelible imprint on my young mind years ago.