7/7 AC-12 close in on 'H'.
6/7 AC-12 struggle to come to terms with tragic events.
5/7 AC-12 link Gail Vella’s murder with a historic case of police corruption.
4/7 AC-12 make major breakthroughs, but an interview with a key witness goes horribly wrong.
3/7 A new witness comes forward claiming to have crucial evidence in Gail Vella's murder.
2/7 AC-12 probe DCI Davidson's inquiry and begin to suspect a cover-up.
1/7 AC-12 investigate a botched murder inquiry.
6/6 In a nail-biting 90-minute finale, Hastings' secrets are laid bare.
5/6 As the hunt for 'H' intensifies, Steve and Kate wonder if Hastings is hiding something.
4/6 Tensions rise in the OCG following the events at Eastfield.