Derry Girls special review: It's time to move on – for the girls, and for Derry

We said goodbye to the girls with an hour-long special episode set around the Good Friday Agreement 

Louisa Clare Harland and Saoirse Monica Jackson in the special episode of Derry Girls. 

Knowing when to say goodbye is never easy, especially for a show as successful as Derry Girls.

The list of TV shows that have outstayed their heydey is as varied as it is long, and it must have been tempting for creator and writer Lisa McGee to try hang on.