Observing the Menace

Observing the Menace is a side quest in Dragon Age: Inquisition

"Troilus Hertubise is researching Fade rifts for what he calls his 'Great Mission.' He appears to have camped at a safe distance from each rift for a time, observing its behavior."

Acquisition
Obtained by finding Codex entry: The Diary of Troilus Hertubise near one of the rifts needed for Rifts at the Pavilion in the Emerald Graves (the rift south of Gracevine Camp).