Wesley Shermantine, 60, was pronounced dead at the California State Prison, Sacramento’s health center on Thursday, Sept. 17

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Serial killer Wesley Shermantine, 60, died at the California State Prison, Sacramento, on Thursday, Sept. 17

He was part of a murderous killing team dubbed the “Speed Freak Killers”

Shermantine and his childhood friend, Loren Herzog, were linked to a series of murders and disappearances in California’s Central Valley from the mid-1980s through the late 1990s

A California serial killer who was part of an infamous duo known as the “Speed Freak Killers” has died in prison.

Wesley Shermantine, 60, was pronounced…

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