The Layton Ripper was an event that appeared in the Spook's Bestiary.
This event involved a cattle-ripper boggart, which had turned rogue, and thus had a rank of 1.
During its lifetime, it terrorised the village of Layton.
The boggart was dealt with by the Chipenden Spook, John Gregory, who also took his then apprentice, Billy Bradley.
During the course of the event, Billy Bradley accidentally got his fingers stuck under the binding stone. After this, the boggart drained Billy of all blood in his body - killing him.