The Farm, by Tom Rob Smith

So this book was based on actual events that happened to the author. In the spring of 2009, Smith received a call from his father saying that he needed to come to Sweden immediately because his mom had suffered a psychotic episode & was in an asylum. And almost immediately after, a call from his mother saying she'd just been released from the hospital, everything his father had told him was a lie, that his dad was involved in a criminal conspiracy, and she was flying to London to explain the truth.

You might think, well, obviously, this book has to go one of two ways. Nope. Smith keeps you guessing all the way to the end, with a couple of twists I'm happy to say I never saw coming. Ditto with the resolution. A smart mystery, tight writing, fantastic storytelling, and rich, believable characters? More of this, please.