Hi Modena,
I did this interview back in 2002. Three people interviewed me they are pretty senior law lecturers(you will probably recognise some of them from TV etc). They are trying to check your suitability for the course and reasons for wanting to pursue it. They asked about my knowledge of law in the industry I was currently working in. They also queried my ability to research/study. You don't have alot of lectures but you are expected to spend alot of time in the library. I said I loved reading and they asked what was the last book I read - I answered honestly - one of the Harry Potter books, don't think they were too impressed! Give yourself extra time to find the law school if you don't know your way round Trinity. Needless to say I didn't get a place, did BESS instead - no regrets. PM me if you have anymore questions. Final words demonstrate that you are passionate about law.