Simon started to speak but Rutledge cut him short. “Whether her evidence is reliable or not doesn’t matter; this places your wife in the car with Margaret Tarlton, heading toward Singleton Magna in time to make the train. Miss Tarlton’s on her way to Sherborne, where she’s to spend several days with Miss Napier.”

There was a look of surprise on Simon’s face, but he said nothing.

“According to the stationmaster, she isn’t one of the passengers on the train going north and certainly not on the train going south. She doesn’t arrive in Sherborne on fifteen August, nor on the following day, because Miss Napier and her chauffeur Benson have gone to meet her, Miss Napier herself on the fifteenth and Benson on the sixteenth. Meanwhile in London, her maid Dorcas Williams hasn’t seen or heard from her, nor have her cousins in Gloucestershire. Miss Tarlton, it appears, has vanished from the face of the earth. But we do have a body in Singleton Magna who is wearing what appear to be her garments. It would seem, then, that Miss Tarlton died on the road outside Singleton Magna sometime in the afternoon. And if your wife took her out of Charlbury in your motorcar, then your wife was most likely the last person to see Miss Tarlton alive. Do you follow me?”

Simon Wyatt, frowning, said, “Yes, of course I do! I just don’t accept your reasoning. My wife is not a murderess, she’d never met Margaret Tarlton before the thirteenth, when she went to collect her at the station, and I can’t imagine any possible reason why Aurore would want to kill a comparative stranger!”

“Miss Tarlton was very likely going to accept your offer of a position here.”

“And what’s that got to do with murder! No, your theory is full of holes, man! Aurore may have taken Margaret as far as Singleton Magna, but it doesn’t tell me what Margaret Tarlton did once she got there! If Aurore set her down in the town, someone else could have as easily met her there. Have you thought of that? Have you made any effort to find out?”

He hadn’t, as Hamish was busily pointing out.

Shaw. Elizabeth Napier. Thomas Napier. Who else?

“Does Miss Tarlton know anyone in Singleton Magna—or for that matter in Charlbury?”

“God, no! She’s been here once or twice with the Napiers, but she’s not the kind of woman who likes the country very much. London is her métier, she’s at home in parlors and salons and theaters.”

“All the same, she was willing to work here. To leave London.”