Mafia 75. The Mystery of the Ancient Ruins.

The redhead was killing...

You can be wrong about the clue, although yes - here it seems to me that the clue is more likely to be correct than not.

I forgot to add that, in the case of the redhead Arandor, the Heroist can be a USEFUL knight, and it's definitely not worth discarding such an important peaceful role. That's why I wrote that you should just observe.