TV Guide 5Action Wednesday

Several officers join in the pursuit of two men in a van, who are racing through four counties and leaving a trail of destruction in their wake - filming the entire thing on their phone as they ram multiple police cars. Another car takes a pounding when two men attack Sarge's new BMW with a crowbar and Macca is forced to pull his Taser on a driver who failed to stop

An urgent call leads to a multi-vehicle pursuit to rescue a child, as PC Ian Cosgrove tracks down the suspect on the M6 - but is the driver alone? In Cheshire, a vehicle with suspected links to organised crime has been seized and PC Amy Hollis is called in to escort it safely back to HQ., while in Ellesmere Port, PC Chris Swash is on the hunt for a car with cloned plates

Officers pursue a vehicle suspected of being involved in several car thefts and a search of the vehicle reveals cannabis and a nasty-looking sock containing a snooker ball. In Rushden, the Operation Revive team raids a house that has been converted into a cannabis factory, while Lucy and tracker dog Bryn chase a couple of runaways from a van that failed to stop and Bomber tackles a suspected drink-driver, who gives him the silent treatment and refuses to take the roadside breath test

Officers race to catch burglars red-handed after two men are seen trying to break into a number of houses in Cheltenham, but the suspects have disappeared by the time they get there. An extensive search reveals a suspected stolen moped, and police dog Elmo picks up a strong scent and starts tracking

Scully returns to duty, joining Mulder on an investigation into the deaths of several scientists using a robot to explore an active volcano. Finding a group of survivors, they learn the leader of the expedition had seemingly gone mad and started killing the rest. However, they also discover a deadly new life form, previously unknown to science. Bradley Whitford guest stars