As by P.N. Castor.
According the The Thrilling Detective website, this story was co-written with Dave Foley. Dave Foley, in addition to being Don’s fellow writer, poker companion and close friend, was previously married to Sandra Kolb, who became Don’s second wife several years after Dave’s untimely death of leukemia in late-1963, just months after the birth of Dave and Sandy’s only child, Tod. When Don and Sandy married, Don legally adopted Tod, who has since borne the name Tod David Foley Westlake.
The entire short serial is reproduced in the gallery below. For easier reading, click the “view full size” links in the lower right corner of each image in the gallery.