Or can I just skip a few?

I just started watching Castle last week and, in a matter of days, finished the first and second season, all episodes in order. Now, I sort of want to catch up and I was wondering..

Does anything super important to the story line happen in the 3rd and 4th season that I should see before I move on to the current (5th)? I know I should watch the 3rd season episodes on the case of Beckett's mom, and some in the 4th, then there's the episodes that builds up the Caskett relationship. But.. were there any new important plots that popped up in these two seasons that I should know of, or is it still pretty much the same? Thanks :)

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.