Prem and Kamini uncover the real plan behind New Trefelin. Prem and Emlyn begin to suspect foul play behind the collapse at the mine. If it is no accident, then Aled and Daf are the prime suspects, but they protest their innocence. Robert pleads with Megan to leave Trefelin with him, but Prem confronts him with the truth about his past and Basil's real intentions. With Dan's help, Kamini uncovers the real story behind the plans for New Trefelin, leading Prem to challenge Basil to explain the brothers' real motives in returning home.