Not that the Mass of the day has mention of black cats, or the Divine Office of witches, but for so long Halloween meant nothing but parties and vandalism that when someone first proposed that it came out of the liturgy.
You still hear people doubt it, even when you show them that Halloween is All-Hallows’-Eve which is the night-before-All-Saints’- Day. Some tell me they understand that Halloween pranks were a post-Reformation contribution to plague Catholics who kept the vigil of All Saints. Now it is possible that Halloween was abused for such a purpose; nevertheless, during all the Christian centuries up until the simplification of the Church calendar in 1956, it was a liturgical vigil in its own right and thus has a reason for being.
A celebration much like our Halloween, with bonfires and feasting on apples and nuts and harvest fruits, was part of pagan worship for centuries. The Britons celebrated in honor of their sun-god with bonfires, a tribute to the light that brought them abundant harvest. At the same time they saluted Samhain, their “lord of death,” who was thought to gather together at last the souls of the year’s dead which had been consigned to the bodies of animals in punishment for their sins. The Romans celebrated the same kind of festival at this time in honor of their goddess Pomona, a patroness of fruits and gardens. Whether the Church “baptized” these customs or chose this season for her feasts of the dead independent of them, their coincidence shows again how alike men are when they seek God and His ways, give praise, use the language of symbols to express the inexpressible.