De vierde man (The Fourth Man) is a 1981 novel by Dutch author Gerard Reve, the basis for the film of the same name by Paul Verhoeven. Among Reve's works, it stands out as one of only a few novels to have a heterosexual theme.
The novel's origins lie in a commission by the Dutch foundation Collectieve Propaganda van het Nederlandse Boek, an organization that promotes Dutch literature. Reve had been asked to supply the 1981 Boekenweekgeschenk, a free book given to every buyer of a Dutch-language book during a one-week nationwide promotion known as Boekenweek ("Book Week"). Since Reve is homosexual and a Catholic convert, and often combines those themes in his work, the organization stipulated that no gay subject matter was to be touched upon. In the end, Reve did include a bit of gay sex in the book, enough for the foundation to refuse his offering as too controversial. The 1981 Boekenweekgeschenk was Henri Knap's De Ronde van '43, which was widely panned by critics.
Reve published De vierde man with Elsevier/Manteau in 1981.
The novel is a frame narrative. A writer named Gerard recounts the events that happened years before to his friend, Ronald. The story is as follows: Gerard, after a speaking engagement in the town of V., in the southern Netherlands, has a brief affair with a woman named Christine, with whom he spends the night. After seeing a photograph of her boyfriend, Herman, he becomes infatuated with him. Later, he spends a weekend house-sitting for Christine (during this time he picks up a young man named Laurens and has sex with him in Christine's bed) and opens a little chest reminiscent of a coffin, with a key he recognizes from a dream he had earlier. The box contains documents proving that Christine is three times widowed, and another dream he had comes to mind, in which an old man sang a tune asking who would be the fourth man. He leaves the house in a panic; later he hears that Herman was horribly mutilated after an accident in Christine's car.