The farm / Tom Rob Smith.

If you refuse to believe me, I will no longer consider you my son...Daniel believed that his parents were enjoying a peaceful retirement on a remote farm in Sweden, the country of his mother's birth. But with a single phone call, everything changes. Your mother...she's not well, his father tells him. She's been imagining things - terrible, terrible things. In fact, she has been committed to a mental hospital. Before Daniel can board a plane to Sweden, his mother calls: Everything that man has told you is a lie. I'm not mad...I need the police...Meet me at Heathrow. Daniel is immediately caught between his parents - whom to believe, whom to trust? He becomes his mother's unwilling judge and jury. Presented with a horrific crime, a conspiracy that implicates his own father, Daniel must examine the evidence and decide for himself: who is telling the truth? And he has secrets of his own that for too long he has kept hidden...