Mood: The mood of the video appears to be dark, mysterious, and romantic, with a hint of thriller elements. The use of dark colors and the tagline 'A Killer Love Story...' suggests a intense and suspenseful plot. The overall theme seems to revolve around a complex and potentially deadly love story.

Environment: The setting of the video seems to be indoors, possibly in a dimly lit room or a nighttime setting. The dark background and the blueish hue of the image create a somber and eerie atmosphere, suggesting that the video may be set in a confined or isolated space.