Martin witnesses Greg coming to pieces in front of his eyes. But is this a guilty man trying to hide his secrets or a grieving partner on a mission to find Gemma?

Martin goes on a mission to dig deeper into Carl Tuckman's murky past. Could this relate to Gemma's disappearance in the present?

A birthday lunch held in Gemma's honour leads to secrets being exposed, and a break for Martin comes from an unexpected source, as his illicit bond with Zoe deepens.