The police think they have their man – but Helen’s not so sure…

‘What is this place?’ asks pathologist Phil (a splendidly deadpan Matt King), who has come to Polesford to help out on the case of the two missing teenagers.

‘Hell on Earth,’ replies DS Helen Weeks (MyAnna Buring) wryly – and in the nail-biting conclusion to the series’ first two-part story, we discover just why Helen hates Polesford so much and what drove her to leave.

Meanwhile, the whole town has turned against prime suspect Stephen Banks, but Helen is convinced there’s more to this case than meets the eye.

But with her own dark past inextricably intertwined with the investigation, can Helen take a step back and see what’s really going on?

A second two-part story begins next week.