According to the book The Saint: A Complete History in Print, Radio, Film and Television 1928-1992 by Burl Barer, Martin sent her manuscript to Leslie Charteris as a present in 1979.
However Charteris, who at the time was editing a series of continuation books featuring The Saint (he had stopped writing the character full-time in 1963) was impressed enough by the manuscript to offer it to the British publishers of the Saint series, Hodder & Stoughton, for publication as the next book in the series.
Barer writes that Hodder & Stoughton rejected the manuscript, apparently on the grounds that Martin had made Templar sound too Scottish.
Barer also provides an outline of Bet on the Saint, a 1968 collaboration between Charteris and Fleming Lee based on a Saint comic strip storyline, which was rejected by Doubleday (Charteris' American publishers).
And, recently, an unpublished Charteris manuscript from the early 1940s, The Saint's Second Front, has been discovered.