Giving another Patricia Wentworth a try - this isn't a Miss Silver mystery, but the plot summary sounded deliciously ghost-y!
They meet again in the dusk of a ruined garden. Amabel Grey hasn’t laid eyes on Julian Forsham in twenty years, not since she gave him up—the man she’d fallen passionately in love with—for the fiancé who needed her. Now an unexpected circumstance brings the British widow and the world-famous scientist together again.
Amabel’s nineteen-year-old daughter, Daphne, has been invited to join her friends—and the boy she adores—on a trip to Egypt. But she needs two hundred pounds from her mother. George Forsham is offering that exact sum to anyone willing to stay six months at Dower House, the centuries-old estate in the English countryside where Amabel and Julian first met. The fact that the overgrown, sadly neglected house is rumored to be haunted doesn’t deter Amabel. Until strange things start happening . . .
The mewing of a cat that doesn’t exist, the sound of flapping wings, someone crying in the dark. Are restless spirits walking the night? Or is there a rational explanation? Plunged into deadly danger, Amabel could lose her second chance with the man she never stopped loving.