This episode contains information which may be upsetting for some viewers. Discretion is advised.

Mary Speir Gunn was enjoying a quiet evening with her family in 1913, when an unexpected tragedy occurred. The culprit has never been caught.

You can view images relating to this case on our website at: https://www.undiscoveredtruecrime.co.uk/ (information about sources used for each case, and credit for images can also be viewed here). Music is titled 'Horror Playhouse' and is courtesy of Purple Planet.

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