To each is given a phase of the case to develop and he reports as frequently as possible to the chief.

At the end of four weeks Manning, surveying the reports of his men, finds himself in possession of the following: The chemical analysis of the vital organs shows that the victim died of arsenic poisoning.

Detectives have discovered the druggist who sold the poison to the wife.

Other detectives have turned in competent evidence tending to establish the woman's dislike of her husband.

Moreover, she was in love with another man in whose company she was frequently seen.
Then it is found that the husband's life was insured and his death not only released her from matrimonial ties which had become irksome, but also netted her a considerable sum in cash.
Sufficient motive for the crime has now been established.