investigatrix
From LSJ
ὁ νόμος βούλεται μὲν εὑεργετεῖν βίον ἀνθρώπων (Democritus) → Law is meant to benefit human life
Latin > English (Lewis & Short)
investīgātrix: īcis, f. investigator,
I she that investigates (post-class.): comprehensio, Mart. Cap. 5, § 442.