The Alibi

Grisly opening as successful barrister, Stuart Burrage, has his throat slit by hooded intruder to family home. Some convincing police procedural stuff as sympathetic local fuzz use the computer at which he was working, to help establish time of death and other useful leads. Son, Kieran, immediately suspects acquisitive stepmother Rhia, despite her alibi of a shopping trip to Paris supported by security camera film of her passing through Heathrow and visiting the Louvre at appropriate times. Kieran and girlfriend, Ali, doggedly pursue the case which leads to the seemingly obligatory violent showdown. (If you haven't sussed it already - there's an identical twin sister.) Entertaining stuff for Year 8 and above.