What were the points about the case that lead him to suggest seeking a woman?
Doyle thought that it was odd how a usually suspicious person like a prostitute were letting this person so easily get close and alone with them while still on the street, and how easily the killer seemed to move through the streets while he should be spattered with blood. His theory was that it was a female abortionist. Somebody that the prostitutes would know and nobody would think twice about seeing bloody.
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