Book review: It Takes One To Know One, by Isla Dewar
![Book review: It Takes One To Know One, by Isla Dewar](http://www.scotsman.com/webimage/1.4770554.1531925749!/image/image.jpg)
I always imagine that the authors of mystery novels must rue the invention of mobile phones. A quick call to ask a question, a text to avoid a misunderstanding or even research done on the hoof by Googling a fact must be the enemy of trying to keep suspense going.