After a few images and a very brief teaser, we now have a meatier new-look at the fourth season of Trigger Point, with a longer trailer offering a first glimpse at a guest star from the upcoming chapter. While we still don't have a premiere date for the fourth season, we do have some new images as well as a 60-second trailer. In true Trigger Point style, the footage features plenty of drama, twists and explosions. "I'm delighted that this thrilling series is returning for a fourth [season]," said Polly Hill, Director of Drama at ITV. Trigger Point airs on ITV1 and streams on ITVX.