The White People

"Isobel Muircarrie grows up in the Scottish Highlands where her gift of 'Second Sight' enables her to see the phantom White People and communicate with a ghost child. When she moves to London as an adult and falls in love with a stricken young man, Hector MacNairn, who dies shortly afterwards of a heart attack, her ability enables her to 'see' him as a spirit."- - Description by Peter Haining, in "A Century of Ghost Novels 1900 - 2000" (Appendix to his book, The Mammoth Book of Modern Ghost Stories)