Bradford, Yorks - (Slashers): Sources close to the 'Crossbow Cannibal' Stephen Griffiths police probe fear he may use the same legal defence as convicted Acid Bath Murderer John Haigh.
The notorious 20th century serial killer dissolved at least six victims' bodies in sulphuric acid because of his specialist knowledge of the corpus delicti jurisprudence term.
This he reckoned meant 'No Body - No Crime'.
But trial judge Mr Justice Travers Humphreys was having none of it and famously donned his black cap, sentencing Haigh to the scaffold.
Haigh was a scholar at Wakefield's Queen Elizabeth Grammar School which Griffiths himself attended some forty years later.
Archives show both men were keen domestic science students and excelled in human anatomy exams.
The Crossbow Cannibal is under 24/7 observation in Wakefield Jail's remand wing.