Click through the introduction until you are unstrapped from the dentist chair.

Click to get out of the chair (the x-ray light should be on the right). Examine the venus flytrap under the x-ray light. Click the open venus flytrap to pick up a pin. Pick up the shark tooth that's resting on the pipe to the left. Pick up the x-ray on the right that's slightly hidden by the sand bags. (These X-rays can be held up to the X-ray light to examine them, though this is not strictly neccesary for finishing the game). Back away from the flytrap view.

Click to take a closer look at the corner to the right of the X-ray light. Pick up the x-ray underneath the shelves. Pick up the photograph from the second shelf from the top. Examine the trash bin on the lower right. Pick up the pliers from the bin, and the x-ray from underneath the bin. Back away from the bin. Open your inventory and use the pliers to destroy the camera just above the shelves. Turn to the right so that you are facing the dentist chair.

Pick up the photograph on the left that's resting on the covered cadaver. Click to take a closer look at the dentist chair. Pick up the surgical scalpel from the tray, as well as the tiny silver tooth from the tray's upper right corner. Click in the upper left of the screen to "Look Over Here".

Pick up the fishing line from the back of the chair. You'll automatically combine it with the pin in the inventory to make a fishing line. Click the bottom of the dentist chair to look underneath it.

Open your inventory and use the fishing line on the grate. Use the line to fish out the key. Also, take that newspaper clipping on the left. Back away from the grate, then move back again so that you're facing the corner with the X-ray light.

Click to examine the lift lock to the right of the covered cadaver. To unlock the lift, you must quickly and correctly click the proper button indicated by the number on the left, four times in a row. Once the green meter on the right is filled, back away.

Turn to the left. You should be facing the corner with a computer on a desk. Grab the newspaper clipping resting on the machine console to the left of the door. Use the pliers on the camera in the upper right. Click the empty gas canister on the lower left to move it. Pick up the photograph. Examine the lift lock that's to the left of the covered cadaver. Once again, click to examine the lift lock to the right of the covered cadaver. Once again, to unlock the lift, you must quickly and correctly click the proper button indicated by the number on the left, four times in a row. Once the green meter on the right is filled, back away.

Examine the desk with the computer on it. Grab the X-ray that's behind the machine console on the left. Grab the photograph resting under the desk lamp. Click the computer to examine the screen.

Open the inventory and view the four photographs you should have picked up by now. These are key to unlocking the computer. Type HELP in the computer to get information about how to proper unlock it, using the numbers from the photographs. Some may already be correct on the screen, but generally, type TOP 1, then RIGHT 3, then BOTTOM 2, then LEFT 0. This computer has a lot of interesting information on it, (check out DOC 13, DOC 100, DOC 768, DOC 666 and DOC 999) and the AI will respond to a fair number of questions. What we really need to do now, though, is type OPEN DOOR 1. The door to the right of the dentist chair will be open. Back away from the computer and the table, then turn to the left, facing the now-open door.

Go through the door. Use the pliers on the camera in the upper left. Click the sheet on the table examine the JUMP SCARE body underneath. Use the pliers on the gold tooth. Back away from the body. Click the corpses hand to examine it. Use the scalpel to cut off the corpse's finger. Back away. Examine the lift lock on the right side of the door, underneath the "living quarters" sign. Once again, to unlock the lift, you must quickly and correctly click the proper button indicated by the number on the left, four times in a row. Once the green meter on the right is filled, back away.

Turn around to face toward the open door. Use the pliers on the camera in the upper left to disable it. Pick up the "old piece of paper" in the upper right. Click the lift lock on the right to examine it. Once again, to unlock the lift, you must quickly and correctly click the proper button indicated by the number on the left, four times in a row. Once the green meter on the right is filled, back away. Examine the lockers on the right. From left to right, each of the lockers has a number in it, making 7269. The second locker has a newspaper clipping in it as well. Back away from the lockers, then turn around to face the closed door.

The closed door can be opened with the key in your inventory. Go through it into the padded cell.

Once in the padded cell, use the pliers to disable the camera on the upper left. Take the newspaper clipping underneath the fish tank. Click the fish tank to examine it.

Use the finger in the tank to distract the piranha. Once the fish starts chomping on the finger, quickly grab the snaketooth that's in the tank. Back away from the tank. Examine the toilet on the left. Use the fishing line in the toilet to collect the wolf fang. Back away Turn around so that you are facing the couch.

In the center of the padded wall above the couch, there is a secret panel denoted by the cursor turning into a question mark. Click several times, and you'll open the panel, finding the killer's secret notes. Click the corner of the rug on the lower right to roll it up, revealing the article underneath, and pick it up.

Click on the keypad to examine it. Though the buttons aren't labeled, they stand for 123 across the top, 456 in the center and 789 at the bottom. Type in the 7269 code from the lockers. This opens the tooth plate.

To open the final door, you'll need to place the five teeth you've collected throughout the game: the shark tooth, the snake tooth, the silver tooth, the gold tooth, and the wolf fang. Put them in their proper place and push the button. The holding cell door is now open. Back away, turn around and walk through the door.

Looks like Carnodyne Industries is involved here too... Examine the lift doors. If you've been following this walkthrough, all the lift locks should be undone, and the panel on the right all green. Click the open button to open the doors, then enter the lift.

Uh, oh! Looks like the killer doesn't want to let you go yet. Open your inventory and take out the scalpel. Every time she peaks her head through the elevator doors, slice her with the scalpel. Eventually, the lift doors will finish her off for you. Click through to complete the game!