In the Wee Small Hours: Part 2 (S05E07)

In a two-parter featuring both sets of the series' detectives for the first time – a visiting Iowa teen disappears during her New York City school trip, prompting a massive media frenzy that engulfs Detectives Goren (Vincent D'Onofrio), Eames (Kathryn Erbe), Logan (Chris Noth) and Barek (Annabella Sciorra) when their prime suspect Ethan, guest star Matt O'Leary, is a powerful judge's son. The case widens when it appears the accused's philandering father Harold, guest star Colm Meaney, is a co-conspirator who acted to protect his son – and might be a murder suspect himself – but he is not afraid to punch back hard against the investigators. (iTunes)