Six Feet Four

Hap Smith is a new coach driver who took over from Bill Varney but little does he know that he is going to be dragged into a gruesome murder mystery. Which of his four male passengers have committed the crime? Is Smith himself the real murderer?
Excerpt:
"All day long, from an hour before the pale dawn until now after the thick dark, the storm had raged through the mountains. Before midday it had grown dark in the canons. In the driving blast of the wind many a tall pine had snapped, broken at last after long valiant years of victorious buffeting with the seasons, while countless tossing branches had been riven away from the parent boles and hurled far out in all directions. Through the narrow canons the wet wind went shrieking fearsomely, driving the slant rain like countless thin spears of glistening steel."