On the Edge (Christmas Special) - S0.E3

The tranquility of Portwenn is disturbed when a group of birdwatchers descends on the village in search of a rare bird. Pauline announces that she wants to go to university, so Martin has to start looking for another receptionist. Louisa's father Terry arrives unannounced in Portwenn - could this have an effect on the relationship between Martin and Louisa?