This is a collection of four paperback books written by Ridley Pearson, and not a set as such. The books are all the same size, but do not match exactly in formatting. The books The Angel Maker 0-440-21632-X Dell Undercurrents 0-312-92958-7 St. Martin's No Witness 0-440-22142-0 Dell and Probable Cause 0-312-92385-6
