Romantic suspense of the ""prickling spine"" school, with a 19th-century setting. Architect Minerva, snubbed by her male co-professionals, travels to a Pennsylvania town at the invitation of a nice couple, the Tyndalis, to design their new home. But something there is that doesn't want the house built--someone tears up Minerva's design, and she's certain she's being watched. And what of the mysterious disappearance of elderly Mrs. Bosworth, Mrs. Tyndall's mother, and the death of a mine manager? An easy suspect is a militant miner who lost two sons in cave-ins, and who blames Tyndall, even though he is the decent, innocent partner in the mine-ownership. Meanwhile, the doctor son of the Tyndalls proposes to Minerva, and local architect Tony levels what Minerva considers contemptuous criticism of her work. Two attempts are made on her life, the fate of poor Mrs. Bosworth is discovered, and there's a last-minute confrontation in which the villain gabs away. So-so.