Dave and Maddie quarrel over Sam as they keep watch on a man for his mistress, who's convinced he's two-timing her-with his wife.

Maddie tries to ignore the previous night as she and David tackle a new case: a woman wants evidence that her fiance loves her and not her father's money.

David recruits Bert Viola as his detecting companion in a case concerning a man who failed to show up for his wedding while Maddie continues to brood in Chicago.