You can watch all episodes of criminal minds easy, just search it through a FLVDirect player.

Just get any FlvDirect player
ex: link (it´s a free one, supports search on 1600 Streamsites)

1. click on -> search -> video
2. search for "criminal minds all ep" (it´s online, i searched it a minute ago)
3.select your episode and click on -> watch online or -> download

enjoy

(If you search for a certain episode of a tv show just add "all ep" to name in the search field and you will get all episodes listed)

PS: you can also search for movies,tv shows, musicvideos etc etc

at yidio.com its free but on some of the players you can only watch like 70 minutes at a time (about 1 1/3 of a show.)

yidio is the best imo, i think that you can watch like 70 mins and then you have to wait about 1 hour before you can watch more. they are always up to date with the latest episode and they have all 5 seasons on there! quality!

Try, www.casttv.com or www.sidereel.com.
When I watch Criminal Minds on the Internet I usually go to casttv.