Castle 5x21 Moment- Beckett is standing over a bomb which will go off if she steps off the trigger. She tells Castle to leave her as she wants him to be safe and not die with her. As Rick turns his back to leave Kate says “Rick, I love you.” This is the first time Beckett tells Castle I love you. Watch the 2nd part which is funny as Rick returns with cups of coffee.
Castle Season 5 Episode 21 “Still” (HD)
