F.L.A.S.H.!” is the tenth episode of the eleventh season of the Murdoch Mysteries and the one-hundred-sixtieth of the series (not including the stand-alone Christmas special). It first aired on January 8, 2018.


Murdoch investigates a man’s bizarre death which may have been caused by a high-speed travel device.

At the Station House, Brackenreid and Higgins hear a mysterious statement from Bonnie Clement, a switch board operator at the Front Street Telephone and Telegraph Exchange, about two strange telephone calls putting a man in two different places at the same time. Mistaking her for a crackpot, the Inspector dismisses the report at first – until it proves to be critical information for Murdoch's investigation.

Charles Howden’s death was overheard by the switchboard operator who described his cries as being drained of sound and sound waves can't propagate in a vacuum. Murdoch and Ogden’s search for a vacuum large enough to fit an adult human, has Murdoch in for a dangerous ride.

Character Revelations

  • Julia is experiencing a possible side effect of the hormone treatment - a unpredictable 'urgency' (to copulate).
  • While examining the murder victim, William and Julia find a code word for when the 'urgency' arises so as "to strike while the iron is hot" (to procreate)– lemniscate.


Historical References

  • This episode takes place in Toronto 1905 – Edward VII (Albert Edward;1841-1910) is King of the United Kingdom of Great Britain and Ireland and of the British Dominions beyond the Seas.
  • Darwinian principle that inclination is related to fertile receptivity. Darwinian principle that inclination is related to fertile receptivity.
  • In algebraic geometry, a lemniscate is any of several figure-eight or ∞  shaped curves. Commonly, known as the infinity symbol, a mathematical symbol representing the concept of infinity. The curve is also known as the lemniscate of Bernoulli.
  • Skate can mean the very slippery fish and is applied to persons who have slippery natures; A slang from the West Country of England (pre WWI) believed to have been used to describe someone who was a slippery customer. The word is use phonetically (possibly tongue-in-cheek) with 'Lemon' for their code word 'lemniscate' when Dr. Ogden leaves a message for Murdoch with Higgins.
  • Robert Goddard is an American inventor generally acknowledged to be the father of modern rocketry.



Main Cast

Yannick Bisson as Detective William Murdoch
Hélène Joy as Dr. Julia Ogden
Thomas Craig as Inspector Thomas Brackenreid
Jonny Harris as Constable George Crabtree

Recurring Cast

Lachlan Murdoch as Constable Henry Higgins
Arwen Humphreys as Margaret Brackenreid
Peter Stebbings as James Pendrick

Guest Cast

Christopher Leveaux as Sam Trenwith
Blair Williams as Trenton Darling
John Novak as Clyde Spiker
Andrew Robinson as Robert H. Goddard
Aisha Evelyna as Bonnie Clement
Lily Lacey as Gong Fu Chi
Toby Proctor as Fenn Bickford
Kiri Etzkorn as Jaya Bhola
Derek Barnes as Charles Howden
Chris Gleason as Fisherman


Murdoch Mysteries Season 11
Up From AshesMerlot Mysteries8 FootstepsThe Canadian PatientDr. Osler Regrets21 Murdoch StreetThe AccidentBrackenreid BoudoirThe Talking DeadF.L.A.S.H.!Biffers and BlockersMary WeptCrabtree à la CarteThe Great White MooseMurdoch SchmurdochGame of KingsShadows Are FallingFree Falling
Season 1Season 2Season 3Season 4Season 5Season 6Season 7Season 8Season 9Season 10Season 11Season 12
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