I think it has possibilities too. Tonight is the cruncher though for me - if I still think so afterwards I'll be there to the end! The nasty policeman is getting on my nerves and in truth there's no need for the language.
******Potential Spoiler (But my own thoughts, only)*********
I reckon the lawyer was badly let down in a murder case (involving the young boy) by the Police which resulted in the beardy-bloke 'getting away with it'.
think there were nibbles of lots of threads running through - tonight will see lots of those nibbles grow into big bites and I predict 'there will be tears before bedtime' you just mark my words.
The Crown Prosecution Barrister (white-haired fella) failed which meant that Travers succeeded in defending his client (the bloke he shot) in a murder trial. Once cleared, his client then confessed that he had been guilty, which tips Travers over the edge............
But......... where does the little boy come into it? He was suddenly in the taxi at the end but he wasn't in London with Travers. A figment of his imagination?