The nine women were held for two months in a villa outside Istanbul, where they believed they were being filmed for a reality television programme.
Instead, pictures of them cavorting naked around the house and a swimming pool were sold on the internet.
They started to become suspicious by the fact that none of them was being voted out of the house and evicted, as normally happens with the Big Brother format.
Turkish police revealed on Thursday that they rescued the women after storming the villa in Riva, a summer resort on the outskirts of Istanbul, earlier this week.
They acted after some of the women’s relatives complained that they were being prevented from contacting them.
A military police spokesman said the women – most of them models from the Mediterranean resort of Antalya and the Aegean port city of Izmir – had been held captive for around two months.
The women had responded to an advertisement looking for contestants for a reality show that was to be purportedly aired on a major Turkish television station.
The group, including a teenager aged 15 or 16, were selected after being interviewed.
They were made to sign a contract that stipulated that they could have no contact with their families or the outside world and would have to pay a £20,000 fine if they left the show before two months.
They were not abused or harassed sexually, but were told to wear skimpy bikinis, to dance by the swimming pool and were encouraged to get into fights with one another, reports said.