Might be a good idea to scan the Nowak apartment for any additional clues.

Step-by-step guide for Observer, covering how to examine Nowak's apartment and hack into Amir's mind. Includes tips for navigating memories and finding clues.

After dealing with the neighbors, you'll eventually find yourself in room 104, where a dying Amir Nowak awaits. Your next step is to scan his implant to hack into his mind. This is your first dive into someone's memories, and it's a pretty linear experience for the most part. Just keep moving forward. The only real tricky part is a room with a small screen; you'll need to find the matching door and go through it. You might have to do this a couple of times to progress. Once you're back in the apartment, make sure to scan all the blood stains and check Amir's PC before you leave the room.