Helpless and alone, a three-year-old girl makes a desperate call to police after finding her mother collapsed at home.
Her little voice barely audible over the crackling telephone line, "Ellie" tells the operator: "I've tried wiggling her about but she won't wake up."
The heart-rending call was made on Monday, but despite extensive inquiries since then, officers have been unable to identify where it came from and urgently want to trace the girl and her mother.
When asked where she lives, she can only say "near the fish and chip shop" and that the front and back doors are locked, leaving her unable to get out of the house.
What she could tell them is that her name is Ellie, she lives in Leeds at "number 23" of an unknown road, possibly that ends with "Court" and that her mother is Stacey Hall.
West Yorkshire Police's Detective Chief Inspector Lisa Griffin said: "We urgently need the public's help to identify exactly where Ellie and her mum are."
She went on: "We are hoping that someone out there who knows the family will recognise the pieces of information that the ambulance call-taker managed to get from her and will get in touch."
Anyone with information is asked to call the homicide and major enquiry team on 0800 056 0944.