The Rook

What is The Rook about (plot, summary)
The Rook follows Myfanwy Thomas, a young woman who wakes up in a London park suffering total amnesia and pursued by shadowy paranormal adversaries. Grappling with supernatural abilities of her own, she must fight to uncover her past and resume her position within Britain's secret service, the Checquy, before the traitors who stole her memory can finish what they started.