The type of conclusion which ends with the outcome still unknown is called CLIFF HANGER.
Cliff hanger is a style use in literary works, it involves leaving some questions unanswered in a novel for instance, it is usually done is such a way that the readers will be put in suspense to know the ending of the story.
Cliff hanger is usually used by authors in order to ensure that the readers will be forced to read the sequel editions in order to discover how the book actually end.
