About WPC 56 Season 1, Episode 5 :

Gina's life is in danger after an attempt to lure the killer out into the open takes a deadly twist. Jack makes a shocking discovery about the killer's past and then attempts to get to Gina in time. Guest Stars: John Bowler, Jonty Stephens, Kathryn Hunt, Jack Derges, Richard Huw, Adam Sopp, Clare Burt, Chris Larkin, Mark Rice-Oxley, Kieran Bew,