WOW Power Leveling: The Constable will leave you to fight while he tracks the lead Dwarf
[12] Chapter 3: Black Wolds Broken - Speak with Constable Underhill again to be transported to an instanced version of the Black Wolds' old hideout WOW Power Leveling. You will fight some Neeker breaker mobs while protecting the Constable as he travels into the hideout.
Eventually you will reach the end of the maze and see dwarfs beating a Black Wold member. The dwarfs will attack you while one flees. The Constable will leave you to fight while he tracks the lead Dwarf.
These are not difficult mobs. Speak with the Black Wold member, and then continue down the path to the Constable. You have completed Chapter 3 and will be transported out when you speak with him again.
Speak with the Constable when back in Combe to receive your reward. This can be completed by 1-2 level 17's (I had 2 total), or 3 - 4 level 15's without a problem.
Reward: 1s 5c and one of the following: Constable's Jacket (Medium Armor) and Constable's Hammer (One-handed hammer)
[12] Chapter 4: Dark Designs - After the dwarf's attack you are instructed to speak with the Constable again. Speak with him and he will send you back to Bree to talk with Strider. Nothing tough, just go back.