Tilly Ipswitch, an up-to-date witch, sets off from earth with her cat to find a Halloween adventure on another planet; earth is so dull. Garbed in a space suit and equipped with a make-it-yourself space ship, they traverse the milky way and land on Mars. Here among the crags and crevices the haunter is haunted and Tilly receives a bad fright from a group of masquerading Mars children. Illustrations by the author catch the bizarre flavor of a Mardi Gras. A humorous but trivial bit of witchery by the author of The Night the Lights Went Out. The demand for witches goes on.