The term Spoiler is slang for any element of any summary or description of any piece of fiction that reveals any plot element which will give away the outcome of a dramatic episode within the work of fiction, or the conclusion of the entire work. Because enjoyment of fiction sometimes depends upon the dramatic tension and suspense which arises within it, the external revelation of such plot elements can "spoil" the enjoyment that some consumers of the narrative would otherwise have experienced. Readers may find spoilers in mission articles and walkthroughs in this wiki.
Cryptic were criticized for revealing spoilers for episodes from the first two feature series. In response to this, the details of episodes from feature series 3 were not released ahead of time.