Mood: The mood of the video appears to be eerie, suspenseful, and frightening. The theme seems to revolve around horror, with the title 'Horrors of the Heart' suggesting a dark and intense storyline. The overall emotion evoked is one of fear and anticipation.

Environment: The setting of the video appears to be a dark, possibly supernatural or haunted, environment. The presence of a creepy house in the background and the eerie atmosphere suggests that the story may unfold in a haunted mansion or an isolated location. The dark and muted color palette adds to the foreboding atmosphere.