Deus ex Machina
Deus ex Machina is a rather debatable and often criticized form of literary device. It refers to the incidence where an implausible concept or character is brought into the story in order to make the conflict in the story resolve and to bring about a pleasing solution. The use of Deus ex Machina is not recommended as it is seen to be the mark of a poor plot that the writer needs to resort to random, insupportable and unbelievable twists and turns to reach the end of the story.
If in a suspense novel the protagonist suddenly finds a solution to his dilemmas because of divine intervention.