Pip knew where they lived. Everyone in Little Kilton knew where they lived.
Andie Bell, of Little Kilton, was murdered by her boyfriend Sal Singh 5 years ago. The evidence was ironclad, it was an open and shut case as far as the police were concerned, so why, when Pippa Fitz-Amobi chooses the closed case for a project for school, do little pieces of evidence show up here and there suggesting otherwise?