Dæmos Rising (2004)

"In the void between time, the Daemons waited, patiently, to be summoned again… and one man held the key!"

Trapped in an isolated cottage, Captain Cavendish thinks he is seeing ghosts. The only person who might understand and help is Kate Lethbridge-Stewart ... but when she arrives, she realises that Cavendish is key in a plot to summon the Daemons back to the Earth. With time running out, Kate discovers that sometimes even the familiar can turn out to be your worst nightmare.