2013 · ソースブック（プレイを拡張するルール／オプション）
The Deductionist
This Pathfinder RPG sourcebook introduces a base class focused on knowledge, perception, and reasoning. Deductionists master a chosen discipline and use deductive abilities to exploit weaknesses, avoid danger, confound opponents, and develop supernatural talents. The book includes more than 38 deductive abilities, 17 new feats, 13 pieces of equipment, and three archetypes: the Operative, Eldritch Inspector, and Shadowed Avenger. Complete stat blocks, hyperlinks, and bookmarks support reference during play.
スキルベース（スキルを購入または獲得）属性／ステータス制（STR、CON、PERなど）レベル制（XPを獲得してレベルアップ）
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。