Judge and Executioner is an Ambrus dungeon in St. Tyna's Grove where you free prisoners and work out which one is a traitor. Choosing who stays locked up is the whole point.
Clear the outpost, read the orders on the guard's body, take the Keeper's Keys and talk to the prisoners in the cell. Look for evidence before you decide who walks free.
Branko is the informer. Guides recommend leaving him locked up. You can free both men, and you can visit their camp after a day passes to see how it played out.
Image: Rebel Wolves / Bandai NamcoAmbrus's Cellars
Ambrus's Cellars are the court activities where you raid the hidden blood stores of the vampire Ambrus. Each cellar you clear raises his anger, which is how you unlock the duel with him.
Image: Rebel Wolves / Bandai NamcoAmbrus's Cellars: Trouble Brewing
Trouble Brewing is the Ambrus cellar hidden in a guarded house in Svartrau City. Spare the alchemist upstairs and you walk away with a Lasting Malediction Manual and a potent Razor Claw vial.
Ambrus's Cellars: Uninvited
Uninvited is the Ambrus cellar near St. Tyna's Grove, an outpost with ruins below it. It is the toughest of the three cellars because a named murohn guards the blood stock.
Image: Rebel Wolves / Bandai NamcoAmbrus's Dungeons
Ambrus's Dungeons are court activities where you break into Ambrus's prisons and decide what happens to the people inside. They count toward his anger, which unlocks the duel with him.