This letter was sent by Geralt's most beloved teacher, elder quellas of the church of the goddess of snow.
Unlike the usual daily communications, quellas actually sent a signal for help to Geralt in this letter!
This surprised Geralt.
In Geralt's mind, his teacher was a very powerful Holy master, who might have even entered the legendary realm.
What kind of difficulties did such a Holy master encounter? what kind of terrifying enemy did he face to lose his calm judgment and choose to seek help from his useless disciple?
At one point, Geralt thought that the letter was forged, but after careful comparison of the handwriting, he found that it was indeed written by his teacher quellas.
The only thing that made him suspicious was that the letter did not have a date. It seemed to have been sent a month ago. It was considered fast to travel from the watchman Fort to wildfire city.