All the best murder mysteries start with a scone laced with arsenic.

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Books and sources: —The Golden Age of Murder by Martin Edwards —A is for Arsenic: The Poisons of Agatha Christie by Kathryn Harkup —Exhumation of a Murder by Robin Odell —Dead Not Buried by Martin Beales —Malice Aforethought by Francis Iles —The Poisoned Chocolates Case by Anthony Berkeley —Detection Unlimited by Georgette Heyer —Murder Is Easy by Agatha Christie —Unnatural Death by Dorothy L. Sayers —Strong Poison by Dorothy L. Sayers —Bernard Spilsbury: His Life and Cases by Douglas E Browne and EV Tullett

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Music by Audioblocks and Blue Dot Sessions. See shedunnitshow.com/musiccredits for more details.