Sorcha Cusack - part of a theatrical dynasty

Great Britain has many famous acting dynasties - the Redgraves, the Foxes, the Wests and the Cusacks. Actors Cyril and Maureen Cusack had three daughters - Sinéad, Sorcha and Niamh all of them respected actresses on stage and screen, and married to actors. They performed in Chekhov's Three Sisters in Dublin in 1990, with Cyril appearing as the Doctor. These days Sorcha is best known in the TV series Father Brown, playing the priest-turned detective's opinionated and interfering Irish parish secretary. The long running BBC series is based on a character created by G K Chesterton. Lynn Freeman asked Sorcha what keeps attracting her to the role - the fifth series starts this week on UKTV.