Carla is following the police around as part of her new TV show Eyes & Ears. Jonathan is following Adam on his very bizarre attempts at David Blaine-style endurance feats, the latest involving being buried in a coffin, then being, of all things, crucified.
The case itself involved Carla's inspector apparently filmed ransacking an office then smirking up at the secretary he has presumably just killed and hanged from the ceiling.
It's an unusual story, but they all are! The reveal is a little obvious to those who have seen this kind of things before, but it's still quite satisfying. And it does nicely tie together a supposedly solved case involving walnuts sewed into pyjamas with the rest of what is going on.
Not the best episode, but still eough quirks to keep everyone happy.