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Even the best detectives get stuck during their cases.

The alibis are overlapping, the witnesses are contradicting themselves,

and the medical evidence isn't making anything clearer.

As readers of who done it, as confused as our sleuths,

it's hard not to think about how much easier everything would be

if the victim could just tell us what happened,

if the dead could speak to the living.

At the same time as detective fiction was booming in popularity in the early 20th century,

so were ideas that death was not the end.

Spiritualism, a term which encompasses a set of beliefs and techniques

that are to do with making contact with those who have passed on beyond this mortal plane,

was also rapidly attracting fans in the 1880s and 90s,

and the advent of the First World War only increased the number of grieving relations

looking for solace in this way.

Although the traditional rules of golden age detective fiction prohibit the inclusion

of supernatural plot devices, many authors, including Agatha Christie, Dorithiel Sayers,

Gladys Mitchell and more, made use of sayances, mediums and spirits in their work.

On the surface, applying logical deduction and listening to the whisperings of wayward spirits

seemed to be two completely different things, but they are intertwined in the detective fiction

...