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The monsters kill and kill and kill.

For years. Even decades.

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Then they slither back under the rocks from whence they came and glide easily among the innocents.

Waiting for the right opportunity, or until bloodlust overwhelms them, then they kill again.

Bruce McArthur hid for years in plain sight moving easily among the city’s throngs

The 67-year-old serial killer pleaded guilty on Tuesday to the murders of eight men who vanished from the city’s Gay Village.

He will be in court Monday for sentencing that will likely include the disturbing details of the gruesome slayings along with painful victim impact statements.

Now, members of the LGBTQ community are demanding an inquiry into why Toronto cops ignored the red flags that pointed to a serial predator.

Criminologist, serial killer expert and former cop Michael Arntfield likened the difficulty in catching serial killers to an addiction for cops.