A Romantic Premonition -- Thomas Chatterton (1970) -- Lost in France -- Monsieur Nadar (1974) -- Gautier in London (1975) -- Poor Pierrot (1976) -- Inside the Tower (1977) -- Five Gothic Shadows -- The Singular Affair of the Reverend Mr Barham (1978) -- The Reverend Maturin and Mr Melmoth (1981) -- M. R. James and Others (1974) -- John Stuart Mill (1979) -- Lord Lisle and the Tudor Nixon Tapes (1982) -- A Philosophical Love Story -- The Feminist and the Philosopher: A Love Story (1987) -- Shelley's Ghost -- Scrope's Last Throw (1977) -- To the Tempest Given (1992) -- Escapes to Paris -- Scott and Zelda: One Last Trip (1980) -- A Summer with the Novelist (1994) -- Letters from Paris (1994) -- Voltaire's Grin (1995) -- Homage to the Godfather -- Boswell's Bicentenary (1991) -- Boswell Among the Tulips (1992) -- Dr Johnson's First Cat (1999).
