Plot summary
A housekeeper arrives to find her employers dead, Brooks and Devlin begin an investigation into the murder of David and Elaine Lerner, who had only moved into the house six months ago, and had been doing it up as their dream home for when they retired. When they struggle to find a motive for the killing, their line of investigation soon turns to the previous owners of the house, ex-husband and wife Camilla Mallon ( Anna Wilson-Jones ) and Lucas Boyd ( Samuel West ) after discovering that they were part of a major hedge fund scam several years back.
When CCTV footage puts Boyd in the area at the time of the killing, they discover that his fingerprints match the one found in Elaine's blood. Boyd, drunk at the wheel of his car, crashed the vehicle while turning a corner, banging his head, and mistakenly returned his old house - and brutally stabbed the Lerners. Thorne and Phillips press for a murder charge, while faced with Jake’s old mentor Margaret Rumsfield ( Jill Baker ), who argues that the accused should face only manslaughter charges.
Credits
Adapted from Wikipedia contributors, Law & Order: UK series 5. HTML formatting and reference markers removed.