Help the couple - You save Anisse and Berthold, but Olivier from the Kingfisher will die. As a result, you won't be able to buy Olivier's Gwent cards unless you have already done so. Don't go to them - It's assumed that the two are killed by Witch Hunters. Yet, Olivier from the Kingfisher survives.

What happens if you save Anisse and Berthold?

Your contact at the inn, Olivier will die if you choose to save Anisse and Berthold. Abandon Anisse & Berthold - Go straight to the Kingfisher inn and Olivier will be alive.

Should I lie to Niellen Witcher 3?

Geralt can either return to Niellen and lie to him, just like Margrit wanted. If he does, Niellen will offer to pay him. Geralt can either take the money or refuse. If he lies and accepts the reward, he gets 10 crowns and 50 experience points.