Law & Order: UK S08E04 - Pride

The death of a seemingly innocent family man leads Ronnie and Joe to go on the hunt for the murderer, but they soon discover that the accused is Eddie Stewart, just so happens to be former DI Natalie Chandler's father. No one can understand why Eddie would commit murder, least of all Natalie who argues with a sympathetic Jake when she confronts him over the charge against her father. Natalie wastes no time in getting Ronnie to go above and beyond to help her find the real killer, even if that means getting him into trouble with a frustrated DI Leyton.