What the Devil Knows cover

What the Devil Knows

Sebastian St. Cyr • Book 16

by C.S. Harris

Narrated by Davina Porter

4.30 ABR Score (5.7K ratings)
★ 4.22 Goodreads (5.1K) ★ 4.69 Audible (552)
9h 32m Released 2021 Mystery

Why Listen to This Audiobook?

A copycat killer in 1814 London means Sebastian St. Cyr must reopen the most infamous unsolved murders in British history — and Davina Porter makes every cobblestone feel real.

  • Great if you want: historical mysteries with genuine investigative depth and period atmosphere
  • Listening experience: methodical and moody — slow-burn tension with a strong procedural spine
  • Narration: Porter's precise British diction and character differentiation are exceptionally well-matched to the setting
  • Skip if: you haven't read earlier entries — book 16 rewards series familiarity

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About This Audiobook

In October 1814, as London celebrates the end of the Napoleonic Wars, the city finds itself gripped by terror when brutal murders begin mimicking the infamous Ratcliffe Highway killings from three years prior. Sebastian St. Cyr, Viscount Devlin, becomes entangled in the investigation when Sir Edwin Pym, the original case's lead investigator, is found murdered in the same savage manner as the earlier victims. With authorities dismissing the connection as mere coincidence, Sebastian must delve into the dark underbelly of Regency London to uncover whether the wrong man was blamed for the original crimes.

Davina Porter delivers another masterful performance in this sixteenth installment of the Sebastian St. Cyr series, her seasoned narration bringing depth to Harris's intricate historical mystery. Porter's nuanced voice work captures both the aristocratic elegance of Sebastian's world and the gritty brutality of London's criminal underclass, while her measured pacing allows listeners to absorb the complex web of clues and red herrings. Her ability to maintain distinct character voices throughout the lengthy investigation keeps the sprawling cast clearly defined, making this atmospheric mystery particularly well-suited to audio consumption.