Walkthrough :
Press spacebar at Viacom logo to skip most of introduction.
Press spacebar after exit to skip credits.

Enter alley on the right
Push on stage door in the back of the alley
Look at stage door, enter door
Click on Orpheo for direct sequence, or click on stage door for:

Get bone
Use bone on cobwebs
Enter one-way door into museum
In museum, look at crystal ball on green table
Look and touch back of snake on center table
Exit museum through cattle-skull secret door
Go straight through door
Look at Merlin's book (green & blue eyes)
Go to Modeling Studio
Get candle from center drawer at foot of stairs
Drag a blue and a green eye from left-hand drawer to wax head
Look up and climb boxes in center of studio
Look at and touch water valve
Climb down boxes
Go to end of ramp in back of studio
Turn right, enter secret door
Get skeleton key from sewing machine
Go to south entrance to Mythical Creatures
Expose Storage door on the west side
Enter storage room
Go downstairs to basement
Go left and through corridor between fans, enter door to costume shop
Go through costume shop to Prop Storage door (in costume shop Monster day wardrobe, "we can open wardrobe five")
Go behind lined-up backdrops on right to desk
Open desk drawer, try to get doorknob
Lead skeleton to boiler room in basement beyond fans corridor
Once inside boiler room, open door to melt skeleton
Go back to desk and get doorknob
Return to center of Prop Room, go up spiral staircase in back corridor
Turn right (away from barrel), forward, and enter Music Room on the left
Go up stairs to Orchestra Pit
Look at conductor's music stand
Touch flute
Get magic wand
Exit back through Music Room
Go up spiral staircase
Go forward to stage ropes
Look at note on rope
Touch rope (teleportation booths lowered to stage)
Go back down spiral staircase
Turn right, go down and use doorknob to enter Aldo's dressing room
Exhaust dialog with mirror
Press button at right of dressing table to open secret door on the right
Enter Wax Museum and look at Houdini
Look at shirt pocket, get key
Go to basement through Storage door
Go right and behind array of pipes to yellow door
Enter Magic Workshop
Touch Alex, rearrange Alex
Enter teleportation booth, become Alex
Touch R.I.P. symbol
Go forward and get lantern on the right
Go back through tunnel to graves area and get shovel
Go back through tunnel and enter tomb
Go to center left wall and use shovel on marble panel, get hat
Go through tunnel to back left of graves area and exit through brick wall
Enter teleportation booth
Touch stairs symbol
Turn around and get green and red keys
Exit room through door
Exhaust dialog with mirror
Put green key in purple box
Look at boxes on table
Click on door of leftmost box to open secret door
Exit room to Upper Lobby
Move right, forward, forward, right, forward, forward to enter theatre balcony
Look at balcony railing
Look at opera glasses
Watch cut scene, get cape
Go left and upstairs to spectres puzzle on wall
Click on sailor and woman-with-necklace on bottom row
Enter through secret door and enter teleportation booth
Touch moon symbol
Turn around, enter door
At foot of first ladder, turn around and enter door
Forward on catwalk, right at dome
Continue past light bulb
Turn right, get harness
Return to light bulb
Look at light bulb cord
Touch plug
Wait for spark to go along cord
Touch plug again to trap spark in light bulb
Continue straight on catwalk
Turn left, go through door
Continue straight past stage ropes and go down
Look at stuffed bag
Touch stuffed bag to deactivate rope snake
On far side of room, unbar door
Proceed through second-floor corridor and up stairs to spectres secret door
Enter coffin doorway
Go straight, then right at dome
Go straight, then right at dome
Go to end of catwalk, turn left and go up two ladders
Go left at dome by red and blue lights
Turn right, use harness, get medallion
Return to coffin room
Exit room under stairs, go around corner to the right to Orpheo picture
Look at painting
Look at eyes
Touch each eye until they both point upward, secret door exposed
Go through secret door and up stairs to red door
Use red key on red door
Become Terry
Get green key from purple box
Look at hand-written note on wall above desk
Enter teleportation booth
Touch pail symbol
Go up hanging chain
Use green key on green box, get eyeballs
Become Terry & Alex
At oven, turn right and enter parlor
Open "Keep Out" door and get blue key
Enter bedroom (many candles)
Look at and touch pillow on bed
Look at and touch red box
Touch snake crystal, expose secret door
Enter secret room, turn left and see hologram
Turn right back to table and look at table
Touch candle on top of skull
Turn left and look at wax statue of Orpheo
Follow instructions for five enchanted objects (hat,medallion,cape,wand,eyes)
Leave apartment by blue door in parlor
Turn left, go up blue staircase
Go forward twice, turn right and follow catwalk
Enter door, go forward and down spiral staircase
Turn around, open door and go down spiral staircase to stage
Face front of two teleportation booths on stage
Turn left, click question-mark symbol
Click right-pointing hand to the left of left teleportation booth
Click left-pointing hand to the right of right teleportation booth
Endgame sequences