Source: Unearthed Arcana 38 - Feats for Skills
You have an eye for detail and can pick out the smallest clues. You gain the following benefits:
Increase your Intelligence score by 1, to a maximum of 20.
You gain proficiency in the Investigation skill. If you are already proficient in the skill, you add double your proficiency bonus to checks you make with it.
You can take the Search action as a bonus action.