Criminal Minds: "A Higher Power" - When the suicide rate spikes in a Pittsburgh neighborhood, the BAU team suspects the deaths may actually be the result of a serial killer who believes he is an "Angel of Death," on CRIMINAL MINDS, Wednesday, August 6 (9:00-10:00 PM, ET/PT. Writer: Michael Udesky. Director: Felix Enriquez Alcalá. Starring: Joe Mantegna, Thomas Gibson, Paget Brewster, Shemar Moore, A.J. Cook, Matthew Gray Gubler and Kirsten Vangsness. (Originally broadcast 4/9/08)