Patriot Games was written second, but chronologically the events portrayed occur before The Hunt for Red October. These two novels kicked off a series that continues today, and remain among the best technothrillers ever written. The true passion that Clancy has for his subject matter shows through, and his strong personal belief in the values portrayed by Jack Ryan, widely considered to be his fictional alter ego, make these books among the best I have read,
These are also two of my favorite movies. The films follow the novels quite closely. Of course they abridge, but the essence of the stories is there.