I never watched Castle at all so can't compare, but I did actually enjoy this. Except the whole time I kept saying to myself, I can't believe Leanne let Eddie do this. Rachel Bilson was so cute and perky that she (L) has got to be steaming with jealousy. I did enjoy that Rachel (what's her character's name?) didn't obey any of Eddie's directives to stay in the car or keep her mouth shut. Unlike Lou Grant, I LIKE spunk. And since this is a fluffy comedy I guess, nobody got killed.