Through her fight to find out the fate of her husband Evan in the first series, and her battle to protect her children from the fall out in the second, Faith has captured the nation's hearts.
But where, and to who does Faith belong? This time, not only will we see her as a wife and mother, but as a daughter also. And how will we say the final farewell?
To celebrate the third and final series, here's a portrait of Faith Howells (Eve Myles) made from her iconic yellow coat by the artist Nathan Wyburn.