The Delta (novel)The Delta is a science fiction novel by English writer Colin Wilson, published in 1987.Plot summaryThe novel's main protagonist, Niall, heads for the Delta to investigate the source of a vital spiritual force which causes insects to grow large.ReceptionDavid Langford, reviewing The Delta for White Dwarf #100, stated that "The Delta is better than promised by The Tower, but the crudeness of its SF tropes detracts from the more interesting Wilson philosophy."ReviewsReview by Jim England in Vector 142Review by Andy Sawyer in Paperback Inferno, #75