GONE TO GROUND Fugitive speedboat killer Jack Shepherd ‘is hiding from justice in remote village in Thailand’ By Aletha Adu     SPEEDBOAT killer Jack Shepherd may be hiding in a remote Thailand village to escape justice, it has been suggested.   After Shepherd, 31, skipped an Old Bailey manslaughter trial for the death of Charlotte Brown, 24, last year it was thought that he fled abroad.   Web designer Jack Shepherd who is due to be sentenced after he