The Stranger Season 1 Episode 4

Rab, Fergus' childhood best friend, comes to stay with him. Fergus confesses everything to Rab, especially since he can't trust his own opinion due to his dark past. Fergus worries about his sanity. Alex has always been concerned about how the investigation into the Oscar case will be handled. Alex visits Katie, Oscar's mother, but finds she's sedated after a bad fit and isn't able to have any visitors while she's in a mental hospital. Alex discovers that although Katie's family and friends have deserted her; However, there is someone who visits her every week, so he wonders about his relationship with her. And more importantly, what does he know?