Tick, Tick, Tick ...
Season 2 | Episode 217 | Aired 03/22/2010
As the FBI team moves in to arrest Conrad, Beckett gets another call from the killer and sees him through a window, a gun in his left hand and a cell phone in his right. He says that someone has to die and if it can’t be Nikki Heat… BANG! Shaw and her team storm the apartment to find Conrad dead from a gunshot to the head.
Conrad was using the formaldehyde from the taxidermy theft to make a bomb to blow up Beckett and others at the precinct. Later, Castle is going through crime scene photos when he has a realization: In the pictures, Conrad lays dead with the gun in his right hand, but the killer they saw in the window was left-handed. Ben Conrad didn’t kill himself; he was murdered by the man they saw in the window. The killer wanted them to think it was over so he could… make Nikki Heat burn!
Stepping out of the shower, Beckett picks up her ringing cell to hear Castle frantically yelling that Ben Conrad wasn’t the killer. She has only moments for this to register when another cell phone rings and she hears an automated voice say, “Goodbye, Nikki.” BOOM! Beckett’s apartment explodes in an enormous fireball as Castle watches helplessly from the street.
TO BE CONTINUED…though not soon enough.