While in London promoting her new murder mystery, Maxine drops in on her former lover Margot who shares some distressing news: She’s being blackmailed for a love letter from Maxine that went missing after their affair ended. Margot thinks her husband Tony is none the wiser, but he knows everything — and then some. In fact, his yearlong plan to have Margot murdered will commence the next night, thanks to an airtight alibi. But when Margot kills her assailant in self-defense, Tony’s plot takes an unexpected turn. This clever, fast-paced adaptation adds extra layers to the iconic tale, making the “Will he get away with it?” question even more thrilling.