Where Are Arthur And John?

Keeping track of various members of the Peculiar Crimes Unit has always been a bit of a puzzler for readers, but I hope this forms a definitive appearance list.

Janice Longbright, Colin Bimsley and Ian Hargreave, the policeman Janice used to date, all appear in my very first novel 'Roofworld'.

Bryant and May make their first appearance [...]