A man has died following a collision on the B1043 Offord Road, between Offord and Godmanchester.
Police were called at 10.45pm on Thursday evening after with reports that a red Vauxhall Astra had collided with a tree.
Emergency services attended, but the rear seat passenger was pronounced dead at the scene.
The driver, a 24-year-old man, and front seat passenger, a 17-year-old girl, were taken to hospital with serious injuries.