This episode is pivotal for the "Shelburne" arc, which serves as the primary overarching mystery of Season 2.
The episode opens with a high-stakes robbery and shootout at a charity event, leaving one man dead and several injured. [S2E14] The Third Man
The title refers to the unidentified third person involved in the initial shootout who becomes the focus of the manhunt. This episode is pivotal for the "Shelburne" arc,
Danny and Steve discover that the "victim" was carrying multiple fake IDs and high-end weaponry, shifting the case from a robbery gone wrong to a targeted assassination plot. [S2E14] The Third Man