Vice Versa, Part One

Plot:

Ursula and the boys visit a sinister house to get rid of an unknown entity, which turns out to be Squiggley, a verse-spouting hobbledehoy. Whilst he sees off the intrusive Varg he also effects a switch whereby Benny becomes a wizard and Tom a geek. They seek to find him again to reverse the process - as does Varg, now imbued with Ursula's magic and fearful that his family will extract it from him. Unfortunately the Nekross reach Squiggley first and destroy him for his magic.