Mutual of Beauclair's Wild Kingdom Secondary Quest, Blood and Wine Quest

1. Meet the merchants at the camp.

While wandering around Toussaint, Geralt did not neglect his vocation and the true core of his existence, namely, pursuing and slaying monsters. Having found a notice on a notice board, posted by a merchant guild beset by some beast, the witcher decided to go to the appointed spot to learn about the details of the matter.

2. Using your Witcher Senses, investigate the campsite.

Examine signs of the fight and corpse of the merchant.

3. Find out more about the second victim.

At his destination, Geralt found a ransacked camp. It looked as if it had been destroyed recently. He also happened on the bodies of two merchants. Their wounds had clearly been caused by a monster of ample size.

While combing the surrounding area, the witcher happened on Count Borhis di Salvaress, who claimed the monster Geralt was tracking was a silver basilisk - the last surviving specimen of the subspecies which also happened to be the count's wildly roaming pet, a pet the nobleman desperately wished the witcher would spare.

To make matters worse, it turned out this basilisk was also the quarry of a small company of Crinfrid Reavers.

You should check the barrels.

4. Use your Witcher Senses to follow the basilisk.

Follow the scent, it's barely visible...

... then follow the traces of blood.

At some point you will find a corpse of the second victim. Examine it if you want, but it's not required.

... then follow the scent again.

5. Use your Witcher Senses to follow the sounds.

At some point you will hear something. Go to the point marked on your map.

6. Find the basilisk's lair.

While tracking the basilisk, Geralt found yet another corpse.

As things stood, it seemed a band of Crinfrid Reavers was also hunting the basilisk. They had taken on a contract from a local guild and in their arrogance collected the fee in advance.

Yet the mercenaries somehow took an immediate liking to Geralt, which I find hard to believe, as I am quite familiar with their type...

They offered to join forces with the witcher in fighting the beast and promised to share their reward with him once it was brought down.

Timed decision now, to kill or not to kill the beast.

7. Kill the basilisk with the Reavers' help.

You can choose how the Reavers should help you, with their crosbows or axes.

8. Quest completed.

If you decided to spare the basilisk then you will receive 350 (+50 extra) gold.

Geralt decided he would not slay the basilisk.

The count in turn pledged to take more precautions toward safeguarding merchants passing through his pet's feeding range. He also promised that Geralt would acquire ingredients at special prices from herbalists he knew.

... or if you decided to kill the basilish then you will receive 400 gold. You can also loot Silver basilisk trophy and Squire's steel sword.

Geralt decided that the basilisk had to die. It mattered little that it might have been the last of its subspecies, for fundamentally it remained a dangerous beast. Count di Salvaress was distraught. He threatened that the witcher would never see another reasonable price at the shops of the herbalists he knew.