Generally I stick to non-fiction. I'm a huge student of history (especially military) and a voracious reader of true crime and detection books (I come from a police family). Being particularly "into" the US Civil War means I'll usually be reading something on that subject, but at the moment I'm almost through
Sins of the Brother, which is the true story of Ivan Milat, the serial killer who preyed on back-packers here in Australia in the 80's and 90's.
