After looking at those puzzles, I think it's quicker if I just save up and buy the trilogy -- I considered them for a while, until my brain started frying! :-)

My hint offer stands. :)

Bump.

I think I surrender, Niniendo.

If there's no objection, I'll reveal what (I think) I know about part 3, and maybe someone else will have some insight.

PMs are welcome for extra help which were plenty in the last one.

Bumpy.

Hint:

As you stand there pondering over the details of the victims, suddenly you hear a tape play. The chilling voice from the hidden sound system read a poem, no doubt the murderer still in a playful mood.

First, it's about their work load.
Then, the whore secretary's abode.
Where do the wenches hide, each with her lover?
Lastly, what is her name and then the other?

Bump up.

Bumpty dumpty.

Creepy BUMP!

How's-about-a-timezone-BUMP!

Greenwich Bump Time

Bumper Stumper

Lonely BUMP

It is lonely indeed when nobody seems to be asking for help. I'm not sure who is close to solving the third part.