Sian Reese-Williams DI Cadi John Actor Lois Meleri-Jones Lowri Driscoll Actor Sion Davies DS Owen Vaughan Actor Rhodri Meilir Dylan Harris Actor Gwyneth Keyworth Megan Ruddock Actor Garmon Rhys PC Ryan Davies Actor Victoria Pugh DSI Susan Lynn Actor Lowri Izzard PC Mari James Actor Sarah Tempest Alys Mitchell Actor Ian Saynor Huw John Actor Gillian Elisa Iona Harris Actor Rhodri Sion Ieuan Rhys Actor Megan Llyn Bethan John Actor Nia Roberts Elin Jones Actor Ioan Hefin Matthew Actor Owen Arwyn Alun Pryce Actor Lara Catrin Lea Pryce Actor Mali Ann Rees Ffion Actor Morfudd Hughes Ruth Driscoll Actor Elodie Wilton Nia Harris Actor Ed Talfan Executive Producer Mark Andrew Executive Producer Mark Andrew Executive Producer Hannah Thomas Producer Eric Styles Director Gareth Bryn Director Chris Forster Director