He actually wrote thirty other novels, including ‘The Grove of Eagles’ (1963) set in Elizabethan Falmouth; the thrillers ‘Marnie’ (1961) and  ‘The Walking Stick’ (1967) and a spy novel, ‘Night Journey’ (1941); four stage plays and a factual account of the ‘Spanish Armadas’ (1972). 

‘Marnie’ was filmed by Alfred Hitchcock in 1961 and was one of six of Graham’s novels to be filmed, the others being ‘Take My Life’ (1947), ‘Night Without Stars’ (1951), ‘Fortune Is a Woman’ (1957), ‘The Sleeping Partner’ filmed as ‘Carnival of Crime’ (1964) and ‘The Walking Stick’ (1970).

When he was 17 years old, Graham’s family moved to Perranporth for reasons of his health.  He remained for thirty-four years including the first twenty years of his marriage to Jean Williamson (1913 – 1992), pictured above with Graham.  It has been suggested that the Poldark character, ‘Demelza’, was based in part on Jean who also helped him with ideas for, and details in, his novels.

In 1960, the Grahams moved, briefly to the South of France, before finally settling in East Sussex where Graham died in 2003.