The lost coach

The Harrington stagecoach line is plagued by hold-ups and robberies around the Ghost Mountain area. When an entire coach - empty of passengers or bullion - disappears into the Sierra Grande, Harrington, suspecting the rival Nunn line of orchestrating the trouble, calls in Steve 'Baby-face' Randall to investigate. But when the gunfighter meets with Nunn in Silver Town, the stage operator denies ever using such underhand tactics - and Randall is inclined to believe him. If Nunn is to be trusted, then what is the secret of the lost coach?