: Detective Demming continues his pursuit of Kate Beckett, much to Rick Castle's annoyance.

The investigation begins with the death of a thief, but quickly spirals into a deeply personal mission for Detective .

: The episode highlights the theme of loyalty and the thin line between justice and corruption, as Esposito struggles to find the truth about Thornton's fate. The "Third Wheel": Enter Detective Demming

: 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.

This episode is often cited by fans as one of the best for the dynamic, giving Jon Huertas a chance to showcase a more vulnerable side of his character.