Two men are being sought by police after a mother and her toddler were abducted and the mother raped in a seven-hour ordeal.
The woman, in her 30s, was with her child on the seafront near the boating lake in Redcar between 11.30am and 12.30pm on Friday.
A dark-coloured saloon vehicle drove up along the ramp and two men got out.
They forced the woman and her child into the back of the car before driving to Yearby, on Longbeck Lane off the A174, where the woman was raped.
The child was not hurt.
The two were forced out of the vehicle on Kirkleatham Lane between 5.30pm and 6.30pm and they ran across the road into a wooded area.
Cleveland Police said the driver of the vehicle was a white man in his late 20s or early 30s.
He was around 5ft 7in to 5ft 10in tall, with short brown hair, of large build with the word "love" tattooed across his knuckles.
The second man, the passenger, was white, in his early 20s, around 5ft 5in to 5ft 6in tall, of medium build, clean shaven with brown hair. He had a local accent.
Temporary Detective Chief Inspector Matt Murphy-King said: "This has been a very traumatic ordeal for the victim and her child.
"Thankfully, incidents of this nature are rare and this is an isolated incident.
"There are a team of detectives working on this investigation and we have increased patrols in the local area.
"Although we are investigating that the attackers may have known the victim, as a precaution, I would encourage anyone in the local area to be extra vigilant."
Detectives want to speak to anyone who may have seen two men in a dark saloon in the area around the time of the incident or anyone who may have seen them or the vehicle in Yearby the same day.
They would also like to hear from anyone who saw a woman and child in a distressed state in the Kirkleatham Lane area on Friday evening.
Any witnesses or anyone with information can contact Cleveland Police on 101 or Crimestoppers anonymously on 0800 555 111 or via www.crimestoppers-uk.org