Well, the lifestyle of Pi has him halfway there, so I wouldn't be surprised. :P
Following on last week's adventures, we have a full-on Da Vinci Code tribute this week. That improbable sort of adventure is fun, and fun without characters too. Marked the killer early on though, so if not for the adventure it would have been a fairly pedestrian show. Swordfights are always fun though, and the brief one here is pretty exciting and well-executed, and even though it's been a while it is perfectly in line with what Castle has been seen doing.
And as annoying as Pi is meant to be, I'm happy at this divergence from the usual "Alexis does something Castle freaks out about but they reconcile by then end of the episode" thing. I want Pi gone as much as Castle, and I'm just as flabbergasted that Alexis would go for that kind of guy after her previous flirtations with various A+ students... I've got a 3 year-old at home though and I sympathize at eventually having to deal with this. :P