Now that he's done with the Charbonneau Commission, the question arises as to whether disgraced City of Montreal engineer Gilles Surprenant will ever face a judge in a court of law.

CJAD legal affairs correspondent Chris Dimakos is categorical: former City of Montreal engineer Gilles Surprenant, who told the Charbonneau Commission that he accepted at least 700-thousand dollars in kickbacks over a 20-year period, has legal immunity and can never be criminally prosecuted or even sued on the basis of his explosive Commission testimony. The same goes for Lino Zambito and all others appearing before the Charbonneau Commission.

Dimakos says Surpenant could be charged, but only if police have their own evidence.

Even then, says Dimakos, police would not be allowed to use Surprenant's Commission testimony to corroborate any additional evidence they may have.