“And that is all you can tell us,” said Collins, fixing the housekeeper with a sharp look.

“Yes, sir, as far as I can remember, but of course I am all of a fluster. Something more may occur to me; but, oh, sir, what shall I do, I cannot stay in this dreadful house?”

“There is no need for you to do so, is there, Sinclair?” said Collins.

The other tugged at his moustache. “I don’t know. Where are you going?”

“I want to go to my sister’s house at Forest Gate, if I may, I am so upset with all this.”

Collins drew Sinclair aside.

“Let her go,” he said, “and have her watched. It may be useful.”

“Very good,” said he. To Mrs. Simmons, he said, “You can go, but you must give us your address, you will be wanted as a witness at the inquest. Don’t talk about the affair at all. Do you understand?”

“Thank you, sir, I will go and pack,” said she gratefully.

Collins watched her go.