Cirrus@Austlit

'Being genetically engineered as an integral part of a starship's weaponry system for the Martian Star Corps is something Lieutenant Cy De Gerch deeply resents. When a failed war game leaves her marooned on an uninhabited planet with a monster intent on destroying her, Cy sees this as an opportunity to desert the Corps with an almost clear conscience. The ghosts of two former lovers, one male, one female, and an alien spider cross-dressing as a lobster have other ideas.'

Source: Publisher's blurb.