If we believe Nere Drake and take into account that Thorian is an avenger who did not die from the dancer's physical weapon, the question remains: why didn't he kill anyone that night?
Sincerely,
Gur
Added 18 minutes later
Considering the fact that the thief steals the Night Watchman's role for the next 2 nights, Arandor is also unlikely to be the avenger.
Therefore, Hostor and Gill remain. Something needs to be done with them next night.
Sincerely,
Gur
Хай Гурий Слесарь