Scarlet Halls is one of the two new 5-man wings of the Scarlet Monastery in Mists of Pandaria, and is a combination of the former Armory and Library wings of the original Scarlet Monastery.
Level Range: 28-31 (normal) // 90 (heroic)
Number of bosses: 3
Drops: Itemlevel 463
Once you enter the instance, there are two quests to pick up. To complete one, you need to kill 50 mobs inside Scarlet Halls, to complete the second one, you have to retrieve Codex of the Crusade from the last boss. Both quest reward blue items.
On the way to the first boss you have to pick up a shield to avoid attacks from the trash mobs. Nice mechanics.
The dungeon's mobs are mainly paladins/mages of the Scarlet Crusade. This screenshot was taken, while we were going to the second boss.
Armsmaster Harlan is the second boss, you can see the encounter in the video below. He summons adds, which need to be killed prior to burning him.
Here we are burning the last boss...details of the encounter are displayed in the video below.
A detailed video footage is also available: