Enigma code

The enigma code is when the audience asks question of the film they are watching, for example someone dies in the beginning, the audience asks the question "who done it?" The enigma code works by building suspense, the suspense keeps the audience gripped to the film all the way through until they know who the killer is. Films such as Memento uses enigma code as it build suspension all the way through because the audience wants to know what happens to one of the main characters as Guy Pearce wants to know who killed his wife. Other films that use the enigma code is the Machinist because the main character tries to search for this man and this opens questions such as "who is the man", leaving audiences to watch all the way through to find out their answer.