Ua I've seen the series, the truth Ruth is key in this series not because of her role in the main plot, but rather because of the development of her character. From season 1 to 3 she has had a great growth and leaves us wanting to know more about her. The actress who plays Ruth has great potential I hope that in season 4 she will be given her place of honor.

In general the series is amazing and addictive, things will get worse than they already are, we will see how everything flows.

Regards!