The Biggest Mistake

George, Tilly and Esther embark on a road trip to Ireland to stop Phoebe and Vincent from making a colossal mistake, but will they succeed? And when confronted by her friends, how will a furious Phoebe respond? Elsewhere Trevor offers a devastated villager a way out, whilst John Paul is left feeling utterly guilty. Meanwhile the Lomaxes can't help but question Danny's motives.