Stansbie v Troman [1948]

Where defendant has duty to guard against
wrongdoing of third party, futile to suggest third party’s act is nova causa
merely because wilfully inflicted
Decorator at work in house.
Left for 2 hours to get wallpaper.
Alone – told by householder to close front
door whenever he left.
But left door unlocked.
Thief stole diamond bracelet and clothes.
Court of Appeal held decorator liable.