"Concentrate and Ask Again" is the 12th episode of the third season of the American science fiction drama television series Fringe, and the 55th episode overall. In the episode, the Fringe division enlists the help of a troubled telepathic man (Omid Abtahi) in their investigation of a mysterious blue killing powder. Abtahi, Kevin Corrigan, Jody Thompson, and Paul Jarrett guest starred.Graham Roland and Matthew Pitts co-wrote the episode, while Dennis Smith directed.