Go back to the mayors mansion, in the grounds, fight the guard on the right, collect the money, go left all the way and up, there is a banana peel there.
Go back to Apex again, 2nd floor, talk to the guard, you will put out the fake rat again, he will run, then return and kick it away, you collect it, then go to the machine in the room, drop the banana peel in front of it, go talk to the guard again, drop the fake rat, he sees it and runs, slips on the peel and you and the girl go into the lab.
In the lab talk, access the key, but when offered to continue, dont, as you need to get the wires which are in the top left corner of that room, once you have them, continue on as normal.
I made the mistake of hitting continue on and now cannot get back into the lab to get the wires
