Contract: The Creature from Oxenfurt Forest
Witcher contract
Novigrad suggested level 35 
On the world map
From the journal
Mercenaries are usually the ones getting paid for killing things. This time, however, the shoe was on the other foot: a certain Hans of Cidaris, a soldier of fortune by trade, had made it known far and wide that he would pay a handsome sum to whoever could defeat the beast that had made its nest in the forest outside Oxenfurt. Geralt decided to take on the job.
Depending on the outcome: … This time, however, the shoe was on the other foot: a certain Hans of Cidaris, a soldier of fortune by trade, offered to pay Geralt a handsome sum for defeating the beast that had made its nest in the forest outside Oxenfurt. Geralt decided to accept this contract.
While passing through the area around Oxenfurt, Geralt came across tracks left by a dangerous monster. Though he had not received any contract for this beast, he nevertheless decided to follow its trail.
Geralt's investigation led him to conclude that an archgriffin had taken up residence in the ravine. This creature was in most respects similar to the royal griffin Geralt had fought in White Orchard, but with the added nastiness of being able to spit a noxious acid at its prey.
Geralt defeated the beast - and discovered a highly interesting document in its lair. It seemed Geralt's employer, Hans of Cidaris, had already accepted a contract to kill this griffin. What's more, unlike the witcher he had been paid in advance - and a much larger sum than what he had offered Geralt!
Geralt defeated the beast and collected his reward. For once, there was no backpedalling or chicanery!