48 Home Free
We know the engineer was in touch with the intermediary when she was living in Melbourne with her parents. A letter.
We suspect that he would have (1) given her his home number and (2) asked that she let him know her home number when settled in Adelaide.
Then she rang him.
Probably the same day the agent’s body was discovered two hundred yards away from her home.
The engineer and the intermediary devised a fallback plan, knowing the intermediary would be interviewed by the police if they could establish a connection between her and the agent.
The engineer bought and inscribed a copy of the Rubaiyat.
The intermediary, when finally interviewed by the police and informed her name and phone number were found on the back of a Rubaiyat thought to belong to the agent, said she had given a similar Rubaiyat to the engineer over three years ago.
The police suspected the engineer was the man found dead.
When found alive in Sydney and interviewed by the police, the engineer confirmed the intermediary’s story. He even took them to his home and showed them the copy.
… and that was that.
All she had to do was not answer any further questions and stay on her feet when the police showed her the plaster cast of the agent’s head and shoulders.