Someone must have known what happened to Matilda Hacker.
Standing four storeys tall in an elegant Bloomsbury terrace, No. 4, Euston Square was a well-kept, respectable boarding house. But beneath this genteel Victorian London veneer lay murderous intrigue. On 9 May 1879, the body of a former resident, Matilda Hacker, was discovered by chance in the coal cellar. The ensuing investigation – led by Inspector Charles Hagen, rising star of the recently formed CID – stripped bare the dark side of Victorian domesticity.