'ONE OF MY CLIENTS MAY BE PLANNING A MURDER.' Twin brothers Mason and Tyler Linfield are due to split an $800 million inheritance when they turn 25 in a few months. After the estranged heirs unexpectedly decide to take a guided pack trip in the High Sierra wilderness as a 'bonding' experience, Herbert McCabe, attorney for the family trust, is concerned. He turns to Quill Gordon, who accepts an unofficial assignment to see that both brothers get through...