Dr. Stanley's House Walkthrough:

Outside at beginning:
Click on car to zoom in
Click on stick beside car, pick it up.
Click arrow to zoom out.
Click arrow to go right, click again to go to the tree.
Use the stick to knock paper airplane out of tree.
Click on plane to pick up. Unfold plane to reveal code for front door.
The code changes everytime. Use code to open front door.

Inside part 1:
Go in ugly yellow room on the left. You will find a lighter on the left wall in the corner. It's gold color. Leave room.
Turn so you can go up the stairs. Go in door at top of stairs. Pick up teal colored key from top of toilet paper holder. Leave room.
Go down the stairs find the teal colored door with the lines on it. Use key to open door. Click on plant, take grey key. Go to grey door and use key to open.

Grey Room:
Click on pillow take key. Use key to open the door on the left. You should be in a bathroom. Click on tap, pick up green key. Leave room, go to hallway. Remember this room you will have to come back here. Find Green Door

Green Room:
Use key on door. Click arrow to go in a room with a candle. Use lighter on candle. Take meat from box. Leave that part of the room. Click arrow on the left of the green door to go into kitchen. Take plate and steak sauce. Click on plate, put meat on plate, put sauce on meat. click door on the right to go outside.

Outside part 2:
Give meat to dog, dog falls asleep. click right arrow till you find blue statue. Go back in front door. You have to enter the code again. Same one from the plane.

Inside part 2:
Go to stairs find pink key. Use on double doors at the bottom of stairs. Click on cup. select cup then click on pitcher to get water. Go in door on left pick up blue key.

Blue room part 1:
use key, will get knocked out. You wake up in the grey room. Leave room and go to pink room to get your stuff back. In the pink room there is a dead guy. Take his case. You stuff is in it. Go back to blue room.

Blue room part 2:
Go in blue room. zoom in on book shelf. Take tall brown book. It's a diary you will use later. Click on door to left. Go up ladder. Take key by chimney. go back in room. click arrow to go in room on right. Click patio door to go out pick up key. Leave room. Go to pea green room next to blue room.

Pea green room:
open door with key take phone cord. Leave room. Go to orange room on same floor.

Orange room:
Click arrow then go out on patio. Click on old guys head to put him in the bed. Give him glass of water. Click arrow to go left. Go in door on left. Click mirror to reveal star puzzle and key pad on other wall. Code for key pad is in the back of the diary. Input code, wall opens to reveal a hole shaped like the statue. Put the statue in the hole. Turn off lights to reveal answer to star puzzle. Colored dots match keys. Put keys in the puzzle. Hole in wall opens take files and give them to the old guy. Leave room and go back to grey room.

Grey room part 2:
Click phone on desk. Connect cord to phone. Try to dial numbers. phone raises. click on ID. Congratulations you are done.

Another walkthrough:

Grab the stick by the garage wall. Use it to pull the paper airplane from the tree, unfold and read to get the entry code. Enter through the blue door.

Go through the yellow door and pick up the lighter (partially hidden behind the pipe). Walk upstairs and through the greyish door into the other bathroom. Take the key on the paper holder.

That key lets you enter the lounge (bottom floor, boring grey-blue door). Take the grey key from the vase and exit. Unlock the grey door for a cutscene.

Take the skeleton key from the floor (bottom right). Enter the bathroom. Take the somewhat green key from behind the fixtures. Exit twice to get back to the hallway and see another cutscene.

Your newly acquired rotting vegetables-colored key opens the kitchen, at the foot of the stairwell. Enter, go left, light the candle in the window. Take a piece of meat. Double right for a cutscene.

Take a plate and the spice bottle. Put the meat on the plate (plate + inspect [magnifying glass]), click the meat. Click the bottle to spice it up.

Exit through the kitchen door and kill the dog (meat + whatever is supposed to be right of the front door). Enjoy the silence. Double right to pick up the little statue that used to be in the lounge. Left, and enter the house again.

Halfway up the stairs you'll find the pink key. This opens the kitchen (double doors). Click the pot of whatever to your left, get a glass and fill it. Walk out the kitchen entrance (left door) to get the dark blue key.

Use this key to open the blue door at the top of the stairs. As a reward for getting this far, you get hit in the head and wake up behind the grey door. I can only assume that the chinese characters at the bottom of the screen at this point reads "WTF!?". Oh, and your inventory is gone.

Return to the kitchen and walk through the kitchen entrance. Cutscene, dead guy. Take his bag and inspect it to get your inventory back. So there. Now, what were we doing?

Exit and walk through the blue door. Start by checking the bookshelf above the couch (you want the big leather-bound diary). Walk right and onto the balcony to get the somewhat orange-brownish key). Left. Click the door to get a somewhat confusing birds-eye view. Click the left part of the building to get the orange key by the chimney. Return to the hallway.

The smudge-colored key gets you into the room next to the blue one. Nothing to do here except to grab the extension cord. Back out.

The bright orange key gets you through the orange door that's currently behind you. You'll find yourself in a bedroom. Walk onto the balcony for a cutscene. Must be Stanley, right? Give him the drink and put him to bed.

Now go into the bathroom and touch the mirror. Cutscene. A panel just appeared on the right wall. Read the diary for the code (18668798, I don't think this changes). Enter it for another cutscene. Put the statue in the slot.

Now what? Turn off the light. Insert keys as indicated (starting at 12 o'clock, going clockwise: blue, orange, green, grey, dark blue, pink. Nondescript brownish in the center).

Cutscene. Grab the file. Now to finish the game.

Walk downstairs and through the grey door. Use the extension cord on the phone. Click around until you find the ID card under the telephone (I eventually gave up and right clicked). Enjoy ending.