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Change is on the horizon in Penwyllt and the folk who live there know that the town they once loved is about to disappear before their eyes. No one more than Margaret and Clive, who are shaken from their normal lives into the middle of a great mystery.

With Glyn's unexpected return, Margaret and Clive's romantic night at the Manse suddenly takes a dark and surreal turn. Will they stay and face the truth or will they run?

The police are called to the forest to investigate Glyn's lorry which has been completely burnt out, but there is no sign of Glyn anywhere! With people now starting to ask questions, how long will Margaret and Clive be able to keep their secret?

With Glyn still missing and Ruth Ellis on the suitcase, the cracks are starting to show. Will the truth about Margaret and Clive come to light? And what about Herbie and Sylvia's affair? And where exactly does the creepy chemist Haydn Owen fit into all of this?

It's hard enough to hide the truth as a couple, but when three people know the truth it's even harder. Is blood thicker than water? Can Sylvia ever forgive Margaret for what she has done' Can Clive forgive her for betraying him?

Order is restored with Clive safely back in the fold - but for how long? Will Margaret and Sylvia agree to help Clive give Glyn a proper burial as he promised? And if they do, then how? Is there someone else they trust to step in to help?