Benny and Moon face the greatest Nekross attack yet after Tom gets injured and his family journeys to Tibet in search of the cure.

Tom fights for his life in the Cave of Healing. But left alone, Benny and Randal Moon must work together to find the only thing which can defeat the Nekross assault – a long-lost magical mirror. Can the scientist and the Hobgoblin become friends for long enough to outwit the Nekross – or will Lexi find Tom before it's too late?

Teenage wizard Gemma Raven makes a terrible bargain with the Nekross – if they save her mother's life, she will cast a spell strong enough to destroy Tom and Benny's friendship forever! And when Ursula is drawn into the evil plan, she discovers that a fate worse that death awaits her, in the shape of the terrifying Neverwas.