It's the season finale!

Get ready for a showdown as Anto demands money from Colm in exchange for Mo's safety - and that's before Gráinne and David arrive on the scene! 
Elsewhere, Eric is furious when he finds out what O'Shea has been doing. He confronts her, and things spiral out of control...

Tadhg makes a drastic decision, but how will he explain his change of heart?