The author of The Five, about the Ripper murders, turns her attention to another tragically misunderstood victim

In the canon of British true crime, the case of Dr Crippen routinely gets billed as the first “modern” murder. It wasn’t that there was anything particularly original about the doctor’s motives or methods: in January 1910 he slipped poison into his wife’s bedtime drink so that he could marry his secretary instead. Rather, it was the way that Crippen was caught that turned this run-of-the-mill suburban love triangle into an international cause célèbre.

Realising that it would only be a matter of time before his wife’s dismembered remains were discovered in the cellar of the marital home in north London, Crippen and his secretary Ethel Le Neve fled to Canada in disguise. Such was the media hoopla surrounding the case that the sharp-eyed captain of the SS Montrose quickly spotted the runaway lovers among his passengers. This was despite their unconvincing cover story of being “father and son” (the hand-holding and kissing gave the game away). Using the ship’s brand-new Marconi wireless, Capt Andrew Kendall alerted the British authorities that he had the infamous fugitives in his sight. Within hours, Insp Dew of Scotland Yard had boarded a faster ship from Liverpool with the intention of reaching Newfoundland first, so that he would be ready to arrest Dr Crippen and his companion when they made landfall. To a fascinated public, following the unfolding drama in the newspapers, it was as if time travel were being invented before their very eyes.