Investigator

Investigator Rogues specialise in noticing key details and finding the smallest details in an investigation. They know their way round a crime scene, or round a dungeon, and are able to find the most direct route to what they're searching for. 

Historical Knowledge

Starting when you choose this subclass at 3rd level, you can determine facts about an object just by touching it. By spending 10 minutes focusing on an object, you are able to tell who the last person who touched it was, and you can see a name and an image of them in your mind. 

You also gain proficiency in history, if you do not have it already. 

Additional Spells

Also at 3rd level, you gain access to certain spells. You have one free use of each per long rest. Material Components are not needed for any of the spells. 

3rd Level: Mage Hand, Identify 
5th Level: Find Traps 
7th Level: Dispel Magic 
9th Level: Arcane Eye 
11th Level: Legend Lore

Active Awareness

Starting at 9th level, you become more aware of whats happening around you. You can add your Intelligence Modifier to your initiative, and you cannot be surprised. 

Enhanced Observation

Starting at 13th level, you become more in tune with the surrounding area. You can add your Intelligence modifier to any Perception check you make, and your Wisdom Modifier to any Investigation check you make. 

Defensive Breakdown

Starting at 17th level, you are able to weaken your enemies defenses. When you make a successful attack roll, you can forgo 2d6 of sneak attack damage to make an Intelligence Check against their Charisma (Deception) Check against the target. On a success, their AC is reduced by 1d4 until the end of your next turn.

You can use this feature a number of times equal to your Intelligence Modifier per long rest.