A 47-year-old woman was seriously injured in a road traffic collision in Stoke Bruerne, at about 12.30pm yesterday, Thursday.
The woman was the driver of a blue Toyota Celica which was travelling along Rookery Lane from the A509 towards the village.
For unknown reasons, the car went across the verge into a wall.
The woman sustained life threatening head and internal injuries and was airlifted to John Radcliffe Hospital.
Anyone with information or who witnessed the collision is asked to call the Northants Police Drivewatch Hotline on 0800 174615.