The Best Man is poisoned on the eve of a wedding on the glamorous Scaletta family estate. He was the CFO of their successful family business, and advocating for some big changes within it. When Peter's ex-wife emerges as the main suspect (looking suspiciously like Nicola) , Nicola and Charlie must walk down their investigative aisle with care. Through a pet koala, contact lenses and a collection of classic cars, Nicola and Charlie discover that this murder was sealed with a kiss.