This was an interesting short read, with a number of narrators. Some (or all?) of them are unreliable. Inspired by the real life case of the uncovering of a fraudulent 19th century spiritualist, this tells of Flora Milk, a young woman who realises she is a gifted medium, and how she is exploited. The other narrators are a married Victorian lady who has recently lost a child and eventually employs Flora as a companion, a modern young woman called Hattie who is renovating a house, an Ancient Egyptian princess and a person writing accusatory letters about Flora.
I agree this has points in common with Sarah Waters' much longer work, "Affinity" (although I can't claim great knowledge as I've only so far watched a TV adaptation), although Roberts comes to quite different conclusions. She also leaves you wondering who is telling the truth and who isn't!