Release Message:  The question remains - did Gene hunt kill Sam Tyler? Starring Keeley Hawes as Alex Drake.

Description:  The question remains - did Gene hunt kill Sam Tyler? Alex needs to know and all is revealed in the final episode. Meanwhile the rest of the team are dealing with a Jewelry robbery and triple homicide: diamonds are missing and the bodies of three gang members have been discovered. Things don't help with Jim Keats stirring up trouble as usual between team members.