Twists and Turns

Most good thrillers use twists and turns to attempt to draw the audience into a false sense of security where they should be led on an adventurous journey, unsure of what lies ahead. An excellent way to maintain the suspense and tension is to have scenes which build up to a certain point where the audience think they know exactly what to expect and to then dramatically change the scene to and unforeseen outcome

A great thriller film which involves twists and turns is the film, 'Alien'.
Alien is about when a mining ship lands on a planet investigating a suspected SOS signal with the entire crew completely unaware of the dangers which lie ahead. The whole film is an adventurous journey with the crew trying to stop this alien life form before it’s too late.