Swaggering Frank Cosgrove, older brother of Len,injures himself driving his train when he stops to avoid a dog. He is a rude,reluctant patient but Tom discovers his twin secrets - he has diabetes,which is affecting his sight, and he is not the war hero he has always claimed to be. However he rises to the occasion when Tom's daughter Catherine gets trapped beneath a car and Len also proves himself to be a hero,apprehending a smooth con man who has robbed Jean. Tom bans his father from the hospital for using it to store his explosive home brew but there is a reconciliation at a family christening after the villagers have turned out to rescue Catherine.
