Responses
the fourth chapter is a part of the series before this, remember on chapter 1 he (Gavin) said his "stitches are going to pop" its because of those bullet wounds that he got
I think you can read the previous series here
https://myreadingmanga.info/lito-perezitos-reed900-detroit-become-human-dj-eng/
After the end of the third chapter feel like there's something missing cuz they instantly find who The Killer was I feel like there should have been something between Gavin's dad dying and them finding the Killer