At one time if you were married to a Turkish citizen the spouse's citizenship was automatic but then they changed it all & brought in reams of forms and the interview. It was in 2000 that I did the interview, the rules may well have changed again so. If you are in the UK check the Turkish Consulate in London website they should have up to date info on there. From what I've heard from others the content of the interview very much depended on the interviewer - I was just unfortunate enough to get a miserable bugger.