Jim Holbrook plans to kill his employer, Henry Murdock, and replace him with Jim Hardy, who resembles Murdock, to get control over the ranch. The sheriff thinks Cisco killed his assistant, and now Cisco and Pancho must solve the mystery.Jim Holbrook plans to kill his employer, Henry Murdock, and replace him with Jim Hardy, who resembles Murdock, to get control over the ranch. The sheriff thinks Cisco killed his assistant, and now Cisco and Pancho must solve the mystery.