Salinger's Two Dark Muses (1970)

Vincent Salinger, an edgy uninspired poet, fumes at being spurned by his publisher. Suspecting his work and life mean nothing, Vincent seeks new inspiration. An unexpected visit from quasi-demonic friend of poetry introduces Vincent to a clever East-European escort girl who thinks up a literary hoax for success but at the risk of Vincent losing his integrity and identity. Things become more complicated when a rival muse falls in love with Vincent and Vincent's hoax suddenly materializes to haunt him.