CSI: Miami Season 7 Episode 6

Eric and Calleigh guard William Campbell, crown witness against Miami's shortly released top mob capo Joseph 'Joey' Salucci, for the personal murder on AJ Watkins, who accidentally killed Joey's wife in a beach race. The safe house is physically wrecked by contractor Travis Drake's crane from a nearby inactive site, Campbell falls to his death. Ryan finds a drop of amphetamines-addict Kurt Greenfield's blood in the crane. Salucci's poker buddy Mick Ragosa's car left a paint trace on the site during the attack. The crane's computer recordings indicate it worked by remote control from a nearby parking tower. It has surprising DNA traces, leaving Horatio's team with two cases, plus finding Watkins's missing corps.