Crime stories (8) by a smooth dealer, these background themselves in Florida and inject a tart touch to lugubrious goings-on. A small girl's feeling for witchcraft unmasks a killer; a gal gets a man with a magnetic pencil; a multiple killer succeeds again; a girl's locket is proof of a murder; a long short on a secret wife and hated mother killing; a man's fourth marriage ends fatally; a triangle lops off a side; and a poisoning finishes a marriage. Trig.