Circenn is immortal in Scotland and he really hates it. He hates seeing people he loves, wives, favourite pets dying around him for the past 500 years. 
 Lisa lives in the 21st century. She is looking after her sick mother and she is working 2 jobs to pay for the bills. A little of magic and she ends up in old Scotland while Circenn has already taken an oath to kill her. Of course they fall in love. 
 In this book Adam Black is manipulating people's lives again and there is a huge revelation about him towards the end that it will make you go back and reread the parts of the book which included him. I know there is a story about him later in the series that I am dying to read. 
 My favourite scenes of the book: 
 -Circenn cleaning the barrels of his guns with tampons because he did not know what they are for. 
 -Lisa saying to Circenn 'I cannot die. I haven't even lived yet'