: The victim is linked to Ike Thornton , Esposito's former partner from the 54th Precinct who disappeared years earlier.
: Esposito is forced to confront the possibility that his old mentor may have "gone bad" and joined the crew of Victor Racine , a ruthless crime lord who has eluded the police for decades. [S2E21] Den of Thieves
: Watching Beckett and Demming bond over professional respect and shared experiences at the shooting range leaves Castle feeling like an outsider in Beckett's "real" world. : The victim is linked to Ike Thornton
: "Den of Thieves" examines the sacred bond between partners. Esposito’s unwavering (though tested) faith in Thornton mirrors Castle’s own evolving role as Beckett’s partner. much to Rick Castle's annoyance.
: Detective Demming continues his pursuit of Kate Beckett, much to Rick Castle's annoyance.