Sometimes the smallest of human failings can lead to the greatest of disasters. As the Titanic was sinking slowly in the wretchedly cold North Atlantic, she could see the lights of another ship on the horizon. She called for help by Morse lamp and the new Marconi telegraph machine, but there was no response. Just after midnight the Titanic began firing distress rockets. The other ship, the Californian, saw these rockets but didn't come. Why not?

We talk to David Dyer about his debut historical novel, The Midnight Watch.