Hercules and Turbulent Terror special deal. Buy the ‘Hercules’ and get the ‘Turbulent Terror’ for FREE! Set the expectations of your guests high with the huge sky filling bursts of the Turbulent Terror, then light the Hercules and stand back. Your guests will think you had invested in a professional display! Great value and a pack to remember. Contact our fireworks team if you have any questions on this fireworks deal from the Edinburgh Fireworks Store.