Susan has given David the time and opportunity he needs to discover the meaning of her brother's last message. But the sky machine proves to be more than either of them expected. A...

Susan has found David, and she has a lot to tell him. But how much of it will he want to hear?

David and Susan are separated. David is in the hands of their pursuers, but what is it that they want? As he faces a strange interrogation, he must find courage from somewhere. He ...

A small community centre and cafe by a Scottish loch offers David and Susan an oasis of calm as they travel back to London. But a strange conversation with another customer may alt...

Orkney offers a few days of peace and reflection for David and Susan. But the ever-present threat of Helezon and strange links with the islands' Neolithic history combine to shatte...

In an attempt to regain access to the ROC, David and Susan arrange a meeting with a fellow-scientist in Amsterdam to persuade her that they have not been sucked into a mad conspira...

David and Susan try to behave normally, despite the growing danger. But when Susan receives a message from a contact, their field trip to a climate research station takes a sudden ...

A young scientist attempts to persuade a colleague that she has stumbled on information that is putting them in danger. Cut off from the academic community and branded a conspiracy...

Cloud formation specialist David Forrester is stuck in a garage. He's frightened, and for good reason. But what could have got a rational, sceptical climatologist into a situation ...