Maugham, by then in his sixties, spent most of the Second World War in the United States, first in Hollywood (he worked on many scripts, and was one of the first authors to make significant money from film adaptations) and later in the South. While in the US, he was asked by the British government to make patriotic speeches to induce the US to aid Britain, if not necessarily become an allied combatant. After his companion Gerald Haxton died in 1944, Maugham moved back to England. In 1946 he returned to his villa in France, where he lived, interrupted by frequent and long travels, until his death.
Maugham began a relationship with Alan Searle, whom he had first met in 1928. A young man from the London slum area of Bermondsey, Searle had already been kept by older men. He proved a devoted if not a stimulating companion. One of Maugham's friends, describing the difference between Haxton and Searle, said simply: "Gerald was vintage, Alan was vin ordinaire."
Maugham's love life was almost never smooth. He once confessed: "I have most loved people who cared little or nothing for me and when people have loved me I have been embarrassed ... In order not to hurt their feelings, I have often acted a passion I did not feel."
In 1962 Maugham sold a collection of paintings, some of which had already been assigned to his daughter Liza by deed. She sued her father and won a judgment of £230,000. Maugham publicly disowned her and claimed she was not his biological daughter. He adopted Searle as his son and heir but the adoption was annulled. In his 1962 volume of memoirs, Looking Back, he attacked the late Syrie Maugham and wrote that Liza had been born before they married. The memoir cost him several friends and exposed him to much public ridicule. Liza and her husband Lord Glendevon contested the change in Maugham's will in the French courts, and it was overturned. But, in 1965 Searle inherited £50,000, the contents of the Villa La Mauresque, Maugham's manuscripts and his revenue from copyrights for 30 years. Thereafter the copyrights passed to the Royal Literary Fund.
There is no grave for Maugham. His ashes were scattered near the Maugham Library, The King's School, Canterbury. Liza Maugham, Lady Glendevon, died aged 83 in 1998, survived by her four children (a son and a daughter by her first marriage to Vincent Paravicini, and two more sons to Lord Glendevon). One of her grandchildren is Derek Paravicini, who is a musical prodigy and autistic savant.