

Return to the lever that raised the water and use it again to lower the water level once more. Now push out the second beach ball so that it falls into the water. Swim over to the right and climb onto a bank where vines are growing. To the right of that closet, turn the lever to raise the water level. Now hop onto the bank near where you got the earmuffs. Shepherd it out of the enclosed area and into the watery area to the left. There, push a beach ball down to the lower level. This will lower a platform so that you can reach a higher ledge. Head to the right side of the area and pull on the lever. Combine them all to brew a potion that gives you superhuman strength. Then find the second ingredient (on a pedestal below the cauldron, toward the bottom of the screen) and the third ingredient (in the far upper left corner of the waterlogged area). You will receive an ingredient that you can drop into the cauldron, located on the opposite side of the wall to your left. Step in front of it and solve the light puzzle by repeating the pattern of tiles in the order displayed. Now have Hermione head to the nearby cabinet. Climb onto land and plant the mandrake in the pot. You can use the mandrake's wails to break through the wall. Pick him up, then carry him toward the right side of the area, where there's a glass wall. With the earmuffs equipped, head down and to the right where a shrieking mandrake waits. Hop onto it and from there onto the bank. Head over to the platform that you lowered.

When they disappear, head through the opening and drop into the shallow water to the right. Now face in that direction and use Lumos magic to chase away some vines that are blocking an opening. The rat will flip a switch that lowers a ledge to the right.

Start by having Scabbers crawl through the piping located to your upper left. You begin this stage in a confined space along the area's left side.
