Police are looking for the woman a victim of a sexual assault comforted before she was attacked in Queenstown on Sunday morning.
The victim found the woman crying by Starbucks at the top of The Mall, on Camp Street, before comforting her and catching a taxi to her home.
After she got home, she was sexually attacked in her bedroom by a man thought to have a foreign accent.
The man is thought to have followed her as she walked along Fernhill Road between Sainsbury Road and Mackinnon Terrace and then entered her house through an unsecured front door, says Detective Sergeant Brian Cameron.
The victim was alone and the attacker fled through a bathroom window after her phone rang repeatedly.
The woman is being supported by her partner.
The attacker is described as a dark-skinned male of average height, with an athletic build and "non-Kiwi accent", and wore a grey hooded sweatshirt.
Police are urging people to secure their homes, saying the attack is extremely concerning.
Police want anyone who saw suspicious activity around the Mackinnon Terrace, Fernhill Road intersection between 1.30am and 2.45am on Sunday to come forward.