Secret of the Egg

As this extremely short stage begins, you will find yourself in control of Harry and Moaning Myrtle. The first order of business is to collect any obvious LEGO studs scattered throughout the area, which gives you a good opportunity to get a feel for the environment. Make sure to hit the overflowing sinks along the bottom of the screen to make them spew LEGO pieces.

(Left Image) Myrtle can get near enough to the barrel to dump out its contents, then to use them to build a yellow arrow for the back wall. (Right Image) Once you place all four yellow caps, the basin will open to reveal the second portion of the stage.

Once you're familiarized yourself with the area, hit the sinks along the left wall to cause a tank to fill with water and a green cap to fall onto the floor.

Next, head toward the bottom side of the room, near the treasure chest from which a Dementor or similar apparition will appear. If you are controlling Myrtle, you can pass by and use magic to lift a nearby barrel, then dump out its contents (a bunch of yellow LEGO pieces). Assemble those pieces to form a yellow arrow that will glide over to the top of a toilet in one of the stalls along the back wall.

Next, head toward the back left side of the room. There are some lockers there. Knock them open to make an object fall out, then hit it with a magic blast to flip it. Now you can send it up and into the painting along the back side of the room. That'll cause the painting's inhabitant to toss you a green disc. Pick up the disc with your wand and carry it over to the basin along the room's right side. There are four pipes there and you can place a green disc on top of each one. Two of the discs are found near the left side of the room (counting the one that we just described and the one that you caused to appear when you filled the tank with water). Another one is on the floor just ahead of the pipes. You'll find the fourth one by heading to the back side of the room, where two of the three toilets are stopped by the yellow arrows. The third one is blocked by the green disc. Use magic to push down with one yellow arrow while your partner does the same with the other one. When you block the two left toilets, that'll cause the green cap to fly loose from the rightmost toilet. Now you can pick it up and carry it to the basin. Put it into place to open the basin. Then you can jump inside to enter the second portion of the stage.

(Left Image) Use the broom to clean up the stained-glass image of the mermaid. (Right Image) Convince her to throw a handle out that you can then use to make a faucet handle to the right. Turn the handle to fill the pool with water.

When you appear in the area below, you should again begin by collecting any obvious LEGO pieces. Once you've done that, look toward the back wall. There's a stained-glass image there depicting a mermaid, but it has become covered in dust over the years. Near the base of that window, there's a broom. Use your magic to lift it up to the picture and to sweep along the picture's surface. You'll eliminate the dust and reveal a picture of a mermaid.

The mermaid is not pleased to see you (or, more specifically, that you can see her). She'll chuck some junk at you, including some crabs that will move toward you. Take them out with your magic blasts. It may be easier to leap to the outside of the watery basin so that they can't easily approach you. Then use any pieces that follow to build a contraption. A train should start chugging along the outer ring, plus you can cause a cloud to rise into the air and to rain in the stained-glass area. The mermaid will toss out a new device once you finish. Use Wingardium Leviosa magic to raise that object into the air. Lift it over to the right and set it in place near the base of the carving just to the right.

Once that lever is in place, use magic to twist it and the pool will fill with water. The stage concludes once you are in the pool and the water has risen completely.