Masked thieves stole two vehicles from a house in Ringstead.
The home owners were woken up by their dogs barking at about 4.30am on Tuesday (October 7) and looked out of their windows to find their brand new Volkswagen Golf and a Transit van being driven away from their driveway in Carlow Road.
The keys had been taken from their house.
Northamptonshire Police have appealed for witnesses to the incident.
Anyone with information can call officers on on 101 or Crimestoppers anonymously on 0800 555111