My discussion of duress falls into three parts. In part I of the paper, I argue chiefly that Xings done under duress remain clear cases of action, and that they are special cases of acting for a reason. In part II, I propose a five-point analysis of acting under duress. In part III, I examine how duress operates as a defence. I maintain that duress is sometimes an excuse and sometimes a justification for conduct, although I further argue that nevertheless (...) it would not be unreasonable to classify duress as an excuse. (shrink)