This show should win a prize for "How To Stretch a Thin Plot", using the well-worn trick of characters asking pertinent questions only to receive useless answers. As in this exchange:
Motherly Detective: What is going on?
Andrew: It's all happening as it should and it will be your fault.
Motherly Detective: But can you tell me what's happening?
Andrew: You will see it in due time.
And so on for a while. Then Andrew locks Motherly Detective into a basement for no reason (since he already knows what's going to happen) and the story can be stretched further, also pilfering "The Bodies in the Vats" from The Prestige.
In the 1890 timeline, the plot derails into a soppy gay love story, while Polly hints not so subtly that she's invited to some rich person's house to play. I wonder who could that rich guy be. Difficult to guess, but I bet my money on Harker (and I didn't see this before or read anything about it, it's just that predictable).
The only action takes place in my favorite 1941 timeline, where Karl Weissman tries desperately to save Esther. Why should Esther die is not clear, except to introduce an elderly Polly.
In the 2053 storyline Defoe proves to be less trustworthy than expected and the dizzy neighbour not so dizzy.