I would like to suggest the Song of Ice and Fire series starting with A Game of Thrones, by George R. R. Martin. Very realistic series in terms of mortality of important characters. He has been working on the fourth book for more than a year now, which is an example of how well written the intrigue and planning is in this series. A part of his style that I find intriguing is how each chapter he writes is from a different character's perspective. Keeps the novels fresh, and keeps you reading if one character's chapter ended in a cliffhanger!