SPOILERS AHEAD (although you really should've watched it by now, you've had over two years since series 3 was released...)Dacre Montgomery's future on the show is uncertain. He plays (or played) the role of Billy, but as far as we can tell he died in the last series, meaning Dacre's future on the show is unknown (We mean, Hooper's back somehow).At the time the third series was released Dacre shared a heartbreaking throwback photo with a caption detailing his struggles as a teenager.Alongside an old headshot, Dacre included the caption, 'When I was a kid, I was lost.