My book

Well one of them. I can read several at the same time on different devices. I've got one on my kindle about Shackleton but Barbara Erskine is one of my favourite authors as her books are always set half in the past and half in the present with people linked over time, sharing a mystery to be solved to set them free.
The author knows is an historian and really knows her stuff so a lot of what happens in the past is based on facts as much as possible.