This is somewhere between 3 and 4 stars for me. It was very readable, kept me interested and reading till the end; but also, not extremely memorable characters or details, so I doubt I'll have much memory of anything I read in a year or two. There's really only one character you get to know well, which is Miriam, the high-powered journalist who discovers she has the inherited ability to step between worlds into an alternate dimension. This ability comes to her from her family - who she has never known, being an orphan - but once on the other side, her ability identifies to her to her relatives, who turn out to be the equivalent of a massively powerful and corrupt mafia family. Now Miriam finds herself trapped in the "family business" - whether or not she wants any part of it, her ability to travel makes her highly valuable and her position in the family inheritance paints a target on her back. She spends the rest of the book trying to find a way to evade those trying to kill her and find a morally more acceptable alternative to simply joining the family business.