NYPD Detective Kate Beckett:  Not quite sure where you 're going with this , Castle .
Richard Castle: Up .
Richard Castle: All
Richard Castle: right , thirty - two seconds . It takes thirty - two seconds to get from the basement to the twelfth floor .
NYPD Detective Kate Beckett: Great . I 'll alert the media .
Richard Castle: Only the second time , it took her thirty - seven seconds .
NYPD Detective Kate Beckett: Why would it take her five extra seconds ?
Richard Castle: Because the second time , she was n't coming from the twelfth floor . She was coming from the ...
NYPD Detective Kate Beckett: Fifteenth floor ? This does n't make any sense . The Petersons live on twelve .
Richard Castle: Yeah , but I bet the guy who wears that condom lives on _ fifteen _ . By the way , that whole elevator thing , I just did that 'cause you smell nice .
NYPD Detective Kate Beckett: Castle , you ca n't just knock on people 's doors .
Richard Castle: Why not ?