Real-Life Spider-Man Helps Catch Suspected Shoplifter in Toronto "With great power comes great responsibility," said the man behind the mask.

 -- A real-life Spider-Man was recently spotted on video helping catch a suspected shoplifter in Toronto.

The man behind the mask -- Mark Zilio, also known as "Peter Parkour" -- had been outside party supply store Theatrics Plus this past Halloween when he noticed a woman trying to run from security guards and police, according to the store's owner, Sanjoy Kundu.

The woman allegedly ripped a mask "off an expensive costume" in the store, walked out and then "bolted" when security guards and police tried to stop her, Kundu told ABC News today.

While in costume, Zilio "was able to help catch her and keep her from running away," Kundu said. "It was an incredible moment — a real-life Spider-Man helping fight crime."

After Zilio helped apprehend the woman, identified as 32-year-old Stephanie Marsh, she was arrested and charged with theft under $5,000, escaping lawful custody and failing to comply with probation, according to Constable Victor Kwong, of the Toronto Police Department.

Kwong told ABC News that Marsh is scheduled to appear in court on Nov. 10. He said that it was unclear if she had obtained an attorney or entered a plea to the charges against her.

ABC News was not immediately able to reach March for comment.

Zilio told ABC News partner CTV News he was amused that the day he ended "up stopping a crime" happened to be "Halloween, when there's the most Spider-Men around."

"With great power comes great responsibility" he added. "It is my responsibility to encourage the fact that yes, there are licensed street performers often in super hero costumes, but no we do not often intervene and fight crime."