Spoiler: What will happen in '47 Seconds' and 'The Limey'

After tonights episode there is a hiatus, but after that there are still six episodes to be broadcast this season. Here you'll find out what two of the upcoming episodes will be about:

Episode 4.19 is called "47 Seconds."

Look out for the most bizarre of episodes which features a man who believes himself to be Beethoven and conducting a choir which is "invisible."
Also carnage strikes, as there is a bombing in Boylan Square, forcing the team into action.

Episode 4.20 is called "The Limey."

We have new recurring character in town, he's called John Hunt and he works for Scotland Yard. He requests to join forces with Beckett to track down the killer of a family friend

Source: SpoilerTV