The depth-psychology corpus treats ‘ghost’ across at least three distinct registers, none of which reduces to mere folklore. First, ghost appears as a literal psychic phenomenon: the unassimilated residue of a severed attachment, the energic remainder of a relationship whose object has vanished — von Franz’s account of grief makes this clinical. Second, ghost operates as a literary-phenomenological vehicle, most fully in Berry’s reading of Hamlet, where the ghost of the elder king becomes the precipitating ambiguity that both demands and resists interpretation, emblematizing the psychological method itself: the ghost is that which walks away when approached with conditions. Third, ghost surfaces in the theological compound ‘Holy Ghost,’ where Jung, Edinger, Bulgakov, von Franz, and John of Damascus collectively treat the Third Person of the Trinity as the principle of living spirit immanent in creaturely man — a term whose archaic flavor (‘Holy Ghost’ rather than ‘Holy Spirit’) Edinger explicitly prefers for its shadow-bearing quality. Eliade adds a fourth register: the Ghost-Dance Religion as shamanic mysticism with messianic overlay. Taken together, the corpus positions ghost as liminal: a form that inhabits the threshold between the living and the dead, the conscious and the unconscious, the historically superseded and the psychologically urgent.