What is the main conflict in Playing for the Ashes by Elizabeth George?

In this novel, a popular cricket player is found dead in a country cottage where he was not supposed to be. As the detectives from New Scotland Yard investigate the crime and begin to put together the events of the victim's final night, another character tells her story. When it all comes to a conclusion, one of the inspectors will be left with a moral decision that could affect several lives. Playing for the Ashes is a mystery, but it is also a novel that studies human conflict in depth, leaving both a main character and the reader with a moral dilemma that will stick with them even after the last sentence is done.