Protect the map: Timed sequence. Save game here.
Use the map with statuette to get statuette wrapped in map.
Use adhesive tape on the statuette wrapped in map.
Use the statuette wrapped in map on the window. Nicole throws it out the window.

Open the secret door: Take the unbolted monkey wrench from the floor of the kitchen across the table.
Go to the locker (file cabinet) at the corner left of the victim board.
Open the top drawer of the locker. Take Mark Taine's driver's license.
Click on the locker again to move it away from the plaster wall.
Use the monkey wrench on the plaster wall. Nicole says that the key needs bending.
Place the wrench back in inventory and then left click it.
Use the monkey wrench on the plaster wall again. Hit the wall 4 times.
The door is locked. Use Mark Taine's driver license on the lock of the door.

fingerprint the mug. Remove all the stuff with the wrench and look around for a drivers license it will help you to get in the room.

How to trap him in the elevator?

Fix the elevator:
Go behind the pillar at left.
Check the fuse box behind the pillar. There's no fuses.
Place the fuse in a fuse socket that work the elevator. It is the second from right bottom row.
Turn the switch and see that the elevator door closes.

Trap the citizen into the elevator:
Pull back. See that the citizen has followed Nicole and is peeking at the entrance.
Turn back to the fuse box. Turn the switch back on to open the elevator doors.
Take the bricks on the floor left of the pillar.
Go to the elevator. Look close at elevator.
Place the bricks on elevator floor. Place the metal can on top of bricks.
Place batteries inside the metal can.
Use rubber band on the lighter to get a lighter that is lit.
Use lit lighter on metal can.
Watch. Good job, Nicole!