A 20-year-old woman was seriously injured in a head-on collision north of Laval on Monday evening.
The cars collided on Route 335 in Sainte-anne-des-plaines.
The woman was transported to Sacre-Coeur hospital where she's listed in critical condition.
The driver of the second vehicle, 52, was also injured but is expected to survive.
Police don't know what caused the collision.