This episode has lots of drama, but its in the middle rather than the end. It could have been made into two episodes, but I am glad it was not as there is a lack of content for two epiosdes. As normal, a number of clues are provided, but I must admit I am uncertain how these clues fit into the final puzzle, so may be red herrings.
The previous episode, while good, lacks impact because most of the audience would not have invested into the character of Maho. This continues in this episode, although you get more back story so perhaps this issue is not as great. A lot of the best episodes show the characters you have become familiar involved in drama or conversations and it works. It may be cheap relying on the work of the previous series to get the audience glued to the screen, but it works. The problem arises with the new characters, where the audience investment is less. I am uncertain what the writers could have done to reduce this issue, but the series is good nonetheless.
At the end we are led to believe all will be well, but as this is only episode 11, that must be a ruse.