Release Message:  It's Election Night and an arsonist is setting fire to polling stations. Starring Keeley Hawes as Alex Drake.

Description:  It's Election Night and an arsonist is setting fire to polling stations. Ray believes they have a military background given the devices used but is reluctant to believe the culprit, identified by an eye-witness, is fireman and ex-Falklands War hero Andy Smith who saved Ray's life. Andy is taken into custody,during which another fire is started, leading Alex to believe that a triangle involving Andy,his wife and his brother is the key to the crimes.Jim tries to persuade Ray to leave Hunt's team and join him.