Nielen's favourite books

My favourite books are:

• Killing Floor by Lee Child (a Jack Reacher thriller)
  
• Tripwire by Lee Child (a Jack Reacher thriller)
  
• The Visitor by Lee Child (a Jack Reacher thriller)
  
• Becoming Sherlock - The Red Circle, by Anthony Horowitz and Sarah J. Naughton
  
• Animal Farm by George Orwell