Avon and Somerset Police has issued an appeal for witnesses after a man and woman died in a crash near Taunton.
The collision between a Vauxhall Corsa and a Renault Megane happened on Friday afternoon on the A358 near Thornfalcon, south of the county town.
The road was closed for several hours for an investigation into the crash, and was reopened overnight.
A spokesperson for the force said: "Emergency services were called shortly before 3.55pm to the A358 after a two-vehicle collision near Thornfalcon.
"It involved a black Vauxhall Corsa – which is believed to have travelled from Taunton – and a blue Renault Megane, which was heading in the opposite direction.
"A man and a woman who were occupants in the Corsa were sadly pronounced deceased at the scene. Their next of kin have been informed.
"The male driver of the Renault sustained serious injuries and is currently in hospital. The road was shut for a number of hours but reopened overnight.
"Witnesses to the collision, or anyone who believes they may have seen the vehicles prior to the collision, are asked to contact us, as is any motorist who has potentially relevant dashcam footage. Please call 101 and quote reference number 5223069144."