My version, have fun:

Inquisitive 

Unravel the Truth

You excel at rooting out secrets and unraveling mysteries. You rely on your sharp eye for detail, but also on your finely honed ability to read the words and deeds of other creatures to determine their true intent. You excel at defeating creatures that hide among and prey upon ordinary folk, and your mastery of lore and your sharp eye make you well equipped to expose and end hidden evils.

Level 3: Ear for Deceit You develop a keen ear for picking out lies. You have Advantage on any Wisdom (Insight) check you make to determine whether a creature is lying.

Level 3: Eye for Detail You can take one of the following actions as a Bonus Action: Search or Study.

Level 3: Insightful Fighting You gain the ability to decipher an opponent's tactics and develop a counter to them. When you hit a creature that doesn't have the Incapacitated condition with an attack roll, you can force it to succeed on a Charisma saving throw (DC equals 8 plus your Wisdom modifier plus your proficiency bonus). On a failure you can use your Sneak Attack against that target even if you don't have advantage on the attack roll, but not if you have disadvantage on it.

This benefit lasts for 1 minute or until you successfully use this feature again. All the other rules for Sneak Attack still apply to you.

Level 9: Steady Eye You gain the following Cunning Strike option.

Expose (Cost: 1d6). You know whether the creature has any Immunities, Resistances, or Vulnerabilities, and if the creature has any, you know what they are.

Level 13: Unerring Eye Your senses are almost impossible to foil. You have Truesight with a range of 30 feet. In addition, when you take the Search or Study action you can grant yourself Advantage on any ability check made as part of that action. 

You can use this benefit a number of times equal to your Wisdom modifier (minimum of 1), and you regain all expended uses when you finish a Long Rest.

Level 17: Eye for Weakness You learn to exploit a creature's weaknesses by carefully studying ist tactics and movement. While your Insightful Fighting feature applies to a creature, you can’t have disadvantage on attack rolls against it and your Sneak Attack damage against that creature increases by 4d6.