Hellfire

On the Syria/Iraq border a British hostage is beheaded by IS terrorists. When the executioner breaks down he is led into a nearby tent where a masked figure is waiting for him. This mysterious person is treated with a mixture of respect and terror. They call him the Caliph.

In Nigeria the British Ambassador and his young aide are kidnapped. A four-person SAS team is deployed to find him. The team includes Danny Black and Caitlin Wallace - an expert on West Africa.

In Nigeria the team find devastation and when they discover prisoners infected with the plague they realise they have uncovered a combined Boko Harem/IS plot to unleash a bio-terrorist attack.

The team must stop the terrorists and identify the Caliph before the deadly disease is released much closer to home.