With a ghost for a partner, what could go wrong?

Spring 1924. The world has clawed its way back from the ravages of World War I and the Spanish Flu pandemic. The '20s are beginning to roar.

Poppy Thornton lives with her Aunt Jo and her excitable cat Maestro in upper-crust Philadelphia. Poppy is determined to make a name for herself as a serious crime reporter, but is stuck reporting on garden parties and ladies' fashion. Then one day, her editor assigns her to collect background information on the suicide of a prominent businessman. She soon discovers it was actually a murder...but her surprising source for this information is the ghost of a man killed alongside her father during the Great War. Even if she dared tell anyone, who would believe it?

Together Poppy and her "gentleman haunt" follow the trail of a string of murders. But as their investigation narrows in on an all-too-familiar suspect, Poppy becomes a target herself and wonders if her ghost of a partner will appear in time to keep her from joining him in the afterlife.