In 1910 Chief Inspector Walter Dew became the most famous detective in the world after a transatlantic chase resulted in him capturing the American murderer Dr Hawley Harvey Crippen. This was the first time that wireless telegraphy had resulted in the arrest of a murderer and it was Dew's final investigation for Scotland Yard. After retiring from the Metropolitan Police and working as a private detective Dew began to write and in 1938 his autobiography...