Castle (2009)

S2E4 Fool Me Once

After an Arctic explorer is murdered during an expedition, Castle and Beckett are drawn into a web of intrigue that leads them from luxurious Park Avenue penthouses to the inner workings of the CIA. While Castle initially revels in the case's unexpected developments, his excitement quickly shifts to annoyance as he begins to suspect that their cunning adversary is playing a game with them, keeping them one step behind.