The strange document was subscribed by Lees and the two detectives and was held by Ferguson pending developments.
The next report from Lees read:
"I had a chance to prowl around the Jouret house a little while waiting for Miss Jouret to dress. I met her twice in my ramblings and a few minutes later she met me again, this time in a different costume.
"I got a chance to search the woods back of Jouret's house in the evening. I found a spot where the earth had been disturbed, and dug up a pair of shoes. They were number nines."
A fourth report from him read:
"We found the body of the crazed engineer. He had drowned himself in a lake. This eliminates him as a murder suspect."
Two weeks passed with no new developments in the "Invisible Death" case except for the arrival of a letter demanding $1,000,000 and threatening the life of Perkins Ferguson if the demand was ignored. It was ignored, and only served to spur Lees and his detectives on to decisive action.
They decided to rush the Jouret house and kidnap Jouret with the idea of holding him until he agreed to explain the presence of the number nine shoes buried back of his house.