With its darkly atmospheric tones,Green for danger works extremely well.The second murder is incredibly well shot with scenes reminiscent of 'I walked with a Zombie',the noise & movement caused by wind being particularly effective.A stellar cast interact perfectly with a special mention for Sally Gray,on her first role after a 5 year break due to 'a mental breakdown',comes across as a glacial goddess.I'm not worthy.Alistair Sim's lugubrious narration provides a perfect framing device building a sense of anticipation and atmosphere.I don't find the movie slow and I was surprised that people find it 'talkie',maybe its modern audiences with their legendary short attention span!