Investigation: Sleepwalkers | Walkthrough The Bureau Guide

Scientist is standing on the corridor.

This Investigation can be unlocked while visiting Bureau after mission Signal from Beyond. Go to the recreation part of building (on left from Operations) and look for doctor Dresner. he orders you to scan employees - somehow infection got inside the Bureau.

Your task is to scan several rooms listed above: Laboratory, Operations, Ready Room and Engineering. To do so, you have to enter mentioned location and activate Focus mode (in PC version you need to press F key).

You have to aim at agents to scan them.

Infected agents are always in the same rooms: one in Ready Room, the other one in Laboratory (next to elerium container). When you identify them, tell them to go to the hospital part of the Bureau and then return to doctor Dresner in his office, on right side of Laboratory.

Scientist is bustling, so wait until he notices you.

Wait a moment standing next to the doctor and when he notices you, report to him. Thanks to that, you unlock new distract mission: Sleepwalkers.