In the previous Chapter 33,
Placido set up his laptop and he can detect the surroundings doesn't have any zombies. Placido wants to confirm to make sure his laptop is not damaged and goes down to look for the butler.
The butler sits and ponders.
Placido calls the butler, "I need to check with you any zombies surrounding the mansion now?"
The butler says, "You can see the CCTV it shows no zombie. Not sure why the zombies followed Robert and Doctor Montana."
Placido asks, "What do you mean?"
The butler says, "The zombies followed Robert not sure why. I don't understand either."
Placido says, "Do the zombies select the people they want to attack?"
The butler says, "No unless they are being modified or there are changes that we don't know."
Placido says, "Oh, will Doctor Montana be okay?"
The butler says, "If you ask me in terms of the number of zombies Doctor Montana might be exhausted."
Placido says, "That means they will be in danger!"