While recuperating, he reads a book donated to the Red Cross by Rosemary Blake, who has written her name and address inside.

Back in the States after being discharged, Johnny boards a train headed to the town in which Rosemary lives and meets Dr. Leslie Ross, a woman reading the same book.

Johnny and Leslie spend time together and, just as he begins asking her if she knows Rosemary, train cars ahead of them derail.

The next day, as the doctor settles into her practice, Johnny drives up the high hill to Rosemary's house.

After days of Rosemary not showing up, and no satisfactory answers forthcoming from either Mrs. Blake or Miller, who seems nervous about the situation, Johnny leaves for San Francisco.

Dr. Ross and her nurse suspect something unusual is happening in the mansion, but because Mrs. Blake was dismissive of the doctor during an initial consultation on her first day in town, they take no action.

Mrs. Blake accuses the doctor of malpractice, but Ross responds that the medicine she had prescribed for Miller was not sufficient to kill her.

They leave, and Johnny is almost killed tripping over the rope that Mrs. Blake tied to their car as part of her trap.

Strangers in the Night's story credit points to Philip MacDonald, a screenwriter on the classic mysteries Rebecca, The Dark Past and Val Lewton's The Body Snatcher.