I was recently rewatching season 1 together with a friend and, once I reached episode 3, I felt like something was missing: I am pretty sure that, when Qiao Link is running, there used to be an explicit mention of a serial killer's 3rd victim; also, I distinctly remember Chen Xiao specifically saying that he never married, due to the trauma. Now, there is nothing of the sort and I'm wondering if it's just me experiencing a mandela effect or if something was actually changed, how they did in episode 5.5, where the mobile phone was changed into an instant camera.