Police are growing increasingly concerned over a 16-year-old girl and a 51-year-old man who have been missing for a week.
Kaylie Hatton climbed out of a window at her grandmother's home in Sidcup, Kent, in the early hours last Saturday, police said.
She is believed to be in the company of a man police named as Fred Finch.
Detective Sergeant Graham Scott said the pair are "high-risk missing persons".
He said Kaylie had had an argument with her grandmother on the Friday night, and had then decided to leave in the early hours of Saturday morning.
Mr Scott said: "We have had some unconfirmed sightings over the past week and we think they might be using swimming pools and leisure centres to grab a shower."
The pair had been seen on a 96 bus in the Welling/Crayford area.
"The last proof of life we have got is Sunday night between 4pm and 8pm at a friend's address," Mr Scott said.
Mr Scott said Kaylie is "distinctive" and could pass for a 21-year-old. She is described as a white female with long blonde hair which may have been dyed dark.
The teenager was last seen wearing a white top with a gold chain around the collar, black leggings and light brown/tan Timberland boots.
Finch, from Eltham in south east London, is described as a white man with short dark hair. He was last seen wearing a black/blue baseball cap, a black jacket, black jeans and black Nike trainers.
Anyone who has seen him or Kaylie or has any information is asked to contact the Bexley missing persons unit on 07774 286077 or 101.