Ava and Beatrice jump into action when they meet an ally eager to take down a self-proclaimed prophet and his followers. Tragedy strikes at the convent.

After the Order sends out an urgent call, Beatrice and Ava connect with old friends in Madrid and stop by a museum. Jillian investigates an anomaly.

As a bizarre plague sweeps the city, Ava uncovers new revelations about Miguel - and Adriel's methods. Lilith explores new possibilities.

Seeking Lilith's whereabouts, the sisters and Miguel visit Jilian. An unnerving discovery upsets Camila. Conflict erupts over Adriel at a conclave.

The Order and their allies prepare for a showdown against Adriel at his new cathedral, but learn their adversaries have been making plans of their own.

After an intense battle, Ava's halo saves a life, while one of Adriel's followers has a crisis of faith. Camila finds herself behind enemy lines.

Ava visits the other realm and returns with a new plan to end Adriel's unholy charade - but it will require superhuman strength and painful sacrifices.