Charles finds an unexpected source for a major clue. A Broadway icon comes knocking at Oliver's door. And Mabel forms an alternate trio to pursue a lead that sheds light on Ben's bro and CoBro history.

The trio have amassed a plethora (oh yes, a plethora) of clues, suspects & theories but find no concrete answers about Ben's murder. They devise a peculiar method of throwing themselves into the actual case to recreate the final moments of Ben's life.