This film depicts the work of the IRA with no sentimentality or romanticism and for that I commend it.
The storyline is convincingly written. The acting is very good all round but I would give an outstanding mention to Maria Lennon whose work I had never seen before and Timothy Dalton from who this is just one more excellent performance. The one downside were a couple of the accents, including (and maybe most noticeably) Dalton's. Accents have never been his strong point! That said, he lends the role the same toughness yet humanity that he has to several other characters in his career, Bond included - all-round believability.
There is a twist that I found disappointing but I won't spoil it for those who have not seen it and may be thinking of doing so.