“The snow and the floods have been abnormal even for these parts,” said Rivers. “I’ve had several investigations in country areas, but I admit I’ve never struck anything quite like St Brynneys. It has a secret quality, and its remoteness affects all the people who live in it.”

First published in 1954, Impact of Evidence has recently been reissued as a British Library Crime Classic. It’s my first Carol Carnac book – I haven’t read Crossed Skis, the other one currently in print – but she also published as E.C.R. Lorac and I’ve read her before under that name. This one is subtitled A Welsh Borders Mystery and is part of a series featuring Chief Inspector Julian Rivers and his sidekick, Inspector Lancing.

The novel begins with a car accident near the village of St Brynneys in the hills of the Welsh borders. Elderly Dr Robinson – whom everyone agrees was too old to be driving – has collided with Bob Parsons’ jeep, with both vehicles being thrown off the road by the impact. Parsons has been lucky and escaped with minor injuries and concussion, but the doctor, whose car has ended up in a stream, has been killed. The Lambton family, who live on a farm nearby, hear the crash and hurry to the rescue, but after retrieving the doctor’s body from the car, they make a shocking discovery. There’s a second body in the back of the car – a man none of the local people have seen before, and as St Brynneys has been cut off from the world for the last few days due to extreme winter weather, nobody knows where he came from.

A local police inspector visits the doctor’s house to try to get to the bottom of the mystery, but when he suffers a fatal accident on the stairs, the mystery only deepens. Chief Inspector Julian Rivers and Inspector Lancing are called in from Scotland Yard, and with the roads still impassable they require the help of the army to access the area. Once they reach St Brynneys, Rivers and Lancing begin their investigations and uncover tensions between the local farming families, the possibility of blackmail and a range of theories to explain the presence of the unidentified corpse.

As my first Carol Carnac book, I’m not sure if there’s anything significantly different between these and her books published as E.C.R. Lorac. The writing style feels very much the same but I haven’t really read enough of her under either name to be able to comment on any other differences. What struck me most about this particular book was the setting and the wonderful atmosphere Carnac creates. The novel is set in a place that has experienced several days of very heavy snowfall, followed by a thaw that has caused flooding, destroying bridges and blocking roads. Carnac’s descriptions of the flooded countryside, the damaged infrastructure and the effect all of this has on a small community really convey a sense of isolation and remoteness. Also, with no routes in or out, this means the suspects (and for that matter, the victims) are limited to people who were already in the area when the snow began.

The actual mystery, I felt, took second place to the setting – which is not to say that it wasn’t interesting, because it was, but I think the descriptions of the snow and the thaw and a society severed from the outside world are what I’ll remember about this book rather than the plot. I’ll try to get round to Crossed Skis at some point and hopefully some more of the Lorac books as well.