Purgatory trap, the

The third part of the Purgatory trilogy continues where the Purgtory Quest left off.Jill and Sondra have been caged and loaded into a lorry with another pair of girls and driven away. At some small airfield they have been transferred to a plane, joining girls from other slave farms, and now they were flying to Tartarus, still not knowing where it was, only that once there they would never return...