Death Among Friends — Harriet Ainsworth

To escape from an unhappy love affair, Alison Sinclair left her home in Edinburgh to lose herself in London. After eighteen months as a companion-secretary to a charming but eccentric old lady, she felt she was ready to forget the past and begin again... But a chance encounter on a London railway station brings it all back... To Alison Sinclair the past was dead and Eden Croft forgotten. She had never expected to see him again.