1204 the police investigation past deduction using modal verbs

THE POLICE

Inspector Robins, from Scotland Yard is at poor Mrs. Sovin’s House.

THE VICTIM

Mrs Sovin is dead. Somebody has killed her, cutting her throat with a knife.

THE MONEY
They have also stolen all her money and jewelry

Mrs. Sovin was very rich, but misery, very misery. Somebody knew that.
Somebody knew where her money and jewels were. That person has killed
her, and stolen everything.
Mrs. Sovin had been alone in the house all morning.
Only four people had keys to the house :
THE SUSPECTS

Joanna,
the maid

James,
the gardener

Stanley,
the nephew

Peter,
the chauffeur

THEIR ALIBI

Joanna said she had gone to Sussex because of her aunt’s illness. She took the nine
o’clock train.
James, the gardener, had stayed in his house, because it was his free day.
Stanley, Mrs. Sovin’s nephew had been to university because he had a lesson there.
Peter, the chauffeur, had gone to the theatre to buy some tickets for poor Mrs. Sovin.
Explain how do you think the murder happened, who did it and why.
Use past deduction with modal verbs
Examples:
He/she must have killed Mrs. Sovin because…..
He/she could/might/can’t have killed her because….