Police are appealing for witnesses to a crash on the A43 between Stanion and Geddington.
The crash involving three vehicles took place between 7.55am and 8.15am on Thursday, March 14.
A black Suzuki Swift, a black VW Golf and a silver Volvo S60 were involved.
All three cars involved were travelling towards Geddington.
Witnesses to the crash, or anyone with information about it, can call Northamptonshire Police on 101 or information can be given anonymously to Crimestoppers on 0800 555111.