Here is the Criminal Minds episode schedule for the rest of August and the beginning of September. Criminal Minds 5th season premiere is on September 23rd.

8/12/09 - "Paradise" - (CBS)
8/14/09 - "Tabula Rasa" - (A&E)
8/15/09 - "Tabula Rasa" - (A&E)
8/15/09 - "The Angel Maker" - (CBS)
8/19/09 - "The Instincts" - (CBS)
8/26/09 - "Memoriam" - (CBS)
9/02/09 - "Omnivore" - (CBS)

Link:
link

I will update the schedule in case there are any changes on the airing dates.