Author. According to his authors bio,
John Sutherland is Lord Northcliffe Professor of Modern English Literature at University College, London, and is the author of a number of works:
Thackeray at Work; Victorian Novelists and Publishers, Mrs Humphrey Ward.
He has written three in a series of books containing short essays about 'puzzles in 19th-century fiction', all three of which I highly recommend. They are: Can Jane Eyre be Happy?, Who Betrays Elizabeth Bennet? and Is Heathcliff a Murderer?.