Spin a dark web

British film released as Soho Incident in the UK. A Canadian living in London is trying to succeed as a prizefighter when he meets the sister of a local mob leader, and she draws him into the gang's activities. When he finds himself being drawn into a murder plot, he realizes that his lover is using him, and determines to escape the gang - but things don't turn out the way he planned. This poster is from the film's first US release, folded as originally issued to cinemas.