The Hillcrest Mystery is a 1918 silent film directed by George Fitzmaurice and starring Irene Castle.

The film was released by Pathé Exchange in March 1918, only a month following the untimely death of Irene Castle's husband and dance partner, Vernon Castle in an airplane accident.

[1] With no prints of The Hillcrest Mystery located in any film archives, it is considered a lost film.

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