As always, P D James has written a very good and intriguing story. The adaptation is faithful to the book: nothing much is added or taken out. However maybe the explanation of the murderer's motives was glossed over a little.
I actually prefer Martin Shaw rather than Roy Marsden as Adam Dalgliesh. Martin Shaw's portrayal is arguably less faithful to the character as P D James writes it, but portrays him as a more human, likable character. I always found Roy Marsden's portrayal (and his description in P D James's books) to be stern, humourless, aloof, distant and with no likable qualities or little human failings that I could identify with.
I liked the subplot about his girlfriend. It showed his vulnerability and his awkwardness with women; the letter that he wrote to her at the end (I won't spoil it by mentioning the subject) was very moving.
I agree that characters of Dalgliesh's two inspectors weren't really developed properly (they aren't in the book either). One of the slight failings of the Dalgliesh books and TV series are that the relationship between Dalgliesh and his sidekicks isn't strong enough that they can confide in each other, in the way that Morse and Lewis or Wexford and Burden do. The acid test of a "good" TV detective, aside from their deductive qualities, is whether you like them as a person and could imagine yourself discussing a case with them over a pint. With Morse, Frost or Wexford, this is easy to imagine; with Dalgliesh, especially as portrayed by Roy Marsden, I suspect that the conversation would be a bit tense and there would be lots of long silences! At least it is easier to imagine having a drink and a chat with Martin Shaw's version of Dalgliesh.
