The fourth series of British science fiction YouTube series Time Agent that was originally due to be broadcast in 2013. Jaime Carroll is to continue his role as Agent Mortis, with Daniel Sherratt starring as a new main character. The series takes place 18 months after Series 3 and the Giant Flower Alien massacre which, consequentially, concluded with Dartchester now having time cracks all over the city, meaning that anything can come through. Agent Mortis has to create a new team to continue saving the world from the alien menace.