I have been hooked by Maggie Hope. This is the third book in the series, and I think they just keep getting better. There needs to be a suspension of belief for all the coincidences that place Maggie in an ideal position to serve in the British intelligence, and, that she has the particular (and unusual) set of skills to make her useful. She is moving up the hierarchy in her spy craft, and this time she is sent into Germany on a quick delivery of radio tubes and the planting of a receiver device for eavesdropping, but ends up staying longer than originally planned, putting her life and her "handler's" life in jeopardy. And the on-going intrigue with her parents just keeps getting more and more complicated.
If you like period stories (WWII), intrigue, strong women and danger, this is the book for you. Publishing date in May 21, but can be pre-ordered now.