Mood: The mood of the video appears to be romantic and intense, with a hint of melancholy. The theme seems to revolve around a complex love story, possibly with a darker or killer twist, as hinted by the tagline 'A Killer Love Story...'. The overall emotion exuded is one of longing and introspection.

Environment: The setting of the video seems to be a cinematic, possibly indoor or nighttime setting, given the dark and blurred background. The environment could be a luxurious or intimate setting, but it's not explicitly clear. The focus is on the emotional intensity of the characters rather than the physical setting.