NCIS Season 3 Episode 15

While busting three sailors-car thieves, NCIS stumbles upon Navy captain Parker Wayne's severed head on ice in female attorney Sean Oliver's Mercedes. Wayne died from a heart attack in hospital months ago, his body was cremated. The funeral director now discovers his furnace operator, Martin Broussard, was into voodoo, and just went missing. The ashes aren't human. Tying these ends involves more secrets.