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Based on a stage play by Edgar Wallace, The Calendar is set amongst Britain's horsey set. Herbert Marshall and his then-wife Edna Best star as a wealthy racehorse owner and his pretty trainer. After divesting Marshall of his millions, his mistress Anne Grey leaves him in favor of a younger, handsomer man. The hapless hero is then betrayed by his butler, who gets his master drunk and convinces him to throw the next race. Banned from the track by a jury of jockey's (the film's highlight), Marshall is afforded the opportunity to redeem himself and to settle old scores with those who've wronged him, thereby paving the way for a climactic clinch with his true love, Best.