The Inquisitor - Guide

Chapter 1: A Mysterious Letter

• The game starts with a cut scene.
  
• Find all the hidden objects in the scene.

• Pick up the JOURNAL and head to the town of Buchenfeld.

• Click on the door of the first house to the right, watch or skip the cut scene then click again to enter.

• Find all the hidden objects in the scene.

• Exit the house and click on the door of the next house to the left.

• Pick up the HAIR PIN from the inventory and use it on the lock to activate a puzzle.

• Click on the tumblers in the following order: 7-2-5-4-5. This is just one of many possible solutions.

• Find all the hidden objects in the scene.

• Exit the house and use the KEY on the tower’s door, watch or skip the cut scene and enter the tower.

full guide here