Pamela Arnold has done it again: another fast-paced suspense thriller that slices through a multitude of dangers, always stays on track, and keeps readers intrigued.

Lively seniors Biddy and Justin, with no time to unpack after returning home from an overseas assignment, are abducted and whisked away in a unique custom-designed, bullet-proof Mercedes.

The action takes place between a luxurious South Australian hills estate called Landmark House and a Tokamak, an experimental machine that harnesses the energy of fusion, in Provence, France.

The story embraces a...