 A politically powerful Big Island rancher learns that his son was killed by a blow to the head. The son was involved in a fight outside a barroom with a local. The local is arrested and, over the rancher s strenuous objections, charged only with manslaughter. The rancher plots to break into the jail and kidnap the suspect, hide him on the huge ranch and ceremoniously hang him from a tree. While Five-O frantically searches for the unlucky suspect, McGarrett finds a rock at the crime scene with blood on it. "This wasn t manslaughter, Danno ... this was murder one!" He means that after the local shoved the rancher s son to the ground, knocking him unconscious, and then fled, someone else -- the rancher s other son, in fact -- finished the job. Five-O scours the ranch to capture the rancher before he can murder an innocent man.