January 1937. Jack Miller has just about run out of options. His shoes have worn through, he can't afford to heat his rented room in Tooting, and he longs to use his training as an specialist wireless operator instead of working in his dead-end job. When he is given the chance to join an arctic expedition, as communications expert, by a group of elite Oxbridge graduates, he brushes off his apprehensions and convinces himself to join them.

The Himalayas, 1935. Kangchenjunga. Third-highest peak on earth. Greatest killer of them all. Five Englishmen set off from Darjeeling, determined to conquer the sacred summit. But courage can only take them so far - and the mountain is not their only foe. As the wind dies, the dread grows. Mountain sickness. The horrors of extreme altitude. A past that will not stay buried. And sometimes, the truth does not set you free.

The Ruins follows two American couples enjoying a pleasant, lazy beach holiday together in Mexico. On an impulse, they go off with newfound friends in search of one of their group, the young German who, in pursuit of a girl, has headed for the remote Mayan ruins, site of a fabled archeological dig.

This forest isn't charted on any map. Every car breaks down at its treeline. Mina's is no different. Left stranded, she is forced into the dark woodland only to find a woman shouting, urging Mina to run to a concrete bunker. As the door slams behind her, the building is besieged by screams. Mina finds herself in a room with a wall of glass, and an electric light that activates at nightfall, when the watchers come above ground. These creatures emerge to observe their captive humans and terrible things happen to anyone who doesn't reach the bunker in time. 

Asher Todd comes to live with the mysterious Morwood family as a governess to their children. Asher knows little about being a governess but she is skilled in botany and herbcraft, and perhaps more than that. And she has secrets of her own, dark and terrible—and Morwood is a house that eats secrets. With a monstrous revenge in mind, Asher plans to make it choke. However, she becomes fond of her charges, of the people of the Tarn, and she begins to wonder if she will be able to execute her plan—and who will suffer most if she does.