If you see a ghost wrapped in a white sheet appears in dreams, it bodes health, happiness and well-being. If you recognize some ancestor in that spirit, it warns you of impending danger. If it appears in black dress, then you should fear treachery from someone you know.
Dream dictionary: Spirit, Ghost dream meanings
Dream of a spirit of the one who is dead, covered in white and with a radiant countenance, means tranquility and peace of mind. The ghost in a clad with black and with an angry expression, means unfaithful behavior of those you are surrounded by, deceit, anger and closure. To see several ghosts during one dream, complication of sorrows.