What 'Derry Girls' Knows About Adulthood

After three uproarious seasons, Derry Girls, a television show about four teenage girls and one teenage boy living in Northern Ireland during the Troubles, has ended. There are logistical reasons for the finale: Many of the actors who play teenagers on the show are verging on or in their 30s; the show portrays the finite time period when the Troubles led to the Good Friday Agreement; and unlike their American counterparts, many U.K. shows rely on a single writer for all of their episodes (in this case, the indomitable Lisa McGee). If a writer wants to move on, they either identify a worthy successor or close the book.