It's just a theory, but it's one of the leading ones. We would be remiss not to consider it. Miss Grell and I are from similar time periods, and if she was indeed a serial killer who targeted promiscuous women, then...well. Her attitude is not uncommon, considering where we're from. Society for us greatly represses any kind of sexual act that is outside the bounds of a marriage. Even I would risk getting jailed, if I was as forthcoming with my advances as I am here.