Paul Murray is an ex-Olympic runner, so his training is perfect for the rigours of multi-million dollar bond trading in the City of London. The pace is breakneck, the smell of success intoxicating. Then the body of his colleague Debbie is fished out of the Thames and Paul’s world is turned upside down. Free To Trade was Michael Ridpath’s first financial thriller. It was translated into 33 languages and stayed at No 2 in the British bestseller lists for three months. $0.99 on Kindle.