“We are too late Holmes all have gone.”
“But the one who is most informative remains. I want you to inquire about local lodgings of the night maid. Be sure to inform her of your profession Take note of everything she says about the firm Make sure to ask no question during your time with her. Off you go gentle Angle of Healing.”
An hour later ….
“The only way I could pry myself from that woman was with a liberal amount of laudanum. But as requested here are 10 references she made as to the goings-on at the firm.