Aidan Trimble

When a motorbike gang kills an occultist, the evil spirit he was summoning inhabits a damaged bike. The bike is then bought and restored, but reveals its true nature when it tries to exact vengance on the gang, and anyone else who gets in its way.

Set during the 1960s in the fictional North Yorkshire village of Aidensfield, this enduringly popular series interweaves crime and medical storylines.