In the winter of 1937, the village of Okamura is abuzz with excitement over the forthcoming wedding of a son of the grand Ichiyanagi family. But amid the gossip over the approaching festivities, there is also a worrying rumour - it seems a sinister masked man has been asking questions about the Ichiyanagis around the village. Then, on the night of the wedding, the Ichiyanagi family are woken by a terrible scream, followed by the sound of eerie music - death has come to Okamura, leaving no trace but a bloody samurai sword, thrust into the pristine snow outside the house.

Yasuko Hanaoka is a divorced, single mother who thought she had finally escaped her abusive ex-husband Togashi. When he shows up one day to extort money from her, threatening both her and her teenaged daughter Misato, the situation quickly escalates into violence and Togashi ends up dead on her apartment floor.

In the Welsh borders, isolated by heavy snow and flooding from the thaw, cut off from telephone access, a tragedy has occurred. Old Dr Robinson known to be 'a menace' on the roads has met his end in a car crash, his big saloon thrown from the track down the steep hillside. But when the police arrive there is more to the tragedy than meets the eye: why was there a second body - an outsider to these parts - in the back of the vehicle?

1936 in the Crown Colony of Singapore, and the British abdication crisis and rising Japanese threat seem very far away. When the Irish nanny looking after acting governor Palin's daughter dies suddenly - and in mysterious circumstances - mission school-educated local girl Su Lin - an aspiring journalist trying to escape an arranged marriage - is invited to take her place. But then another murder at the residence occurs and it seems very likely that a killer is stalking the corridors of Government House.

In Tokyo, murder’s easy to hide. Detective Hiroshi Shimizu investigates white-collar crime in Tokyo. When an American businessman turns up dead, his mentor Takamatsu calls him out to the site of a grisly murder. A glimpse from a security camera video suggests the killer might be a woman. Hiroshi quickly learns how close homicide and suicide can appear in a city full of high-speed trains just a step - or a push - away.