If you had listened to the audio drama this was based on and felt it was too short, then the book is the answer.

This goes more into detail to what happens to Danny and Rebecca,  and I feel ends much better than the podcast.

Spoiler re: the ending of the audio drama vs book

My biggest fear was from memory the audio drama ends and Danny doesn't learn anything and continues to stay in an abusive relationship. But despite the years of brainwashing she tries to deprogram herself. I'm so happy it did not end poorly.