Speed Freak Killers

Loren Herzog
Mugshot
Born
Loren Joseph Herzog

(1965-12-08)December 8, 1965
DiedJanuary 16, 2012(2012-01-16) (aged 46)
Cause of deathSuicide
ConvictionsFirst degree murder (4 counts, overturned)
Voluntary manslaughter
Accessory to murder (3 counts)
Furnishing amphetamine
Criminal penalty78 years (overturned)
14 years, paroled after 11 years
Details
Victims4–19+
Span of crimes
November 27, 1984  November 18, 1998 (Confirmed)
CountryUnited States
StateCalifornia
Date apprehended
March 17, 1999
Wesley Shermantine
Mugshot
Born
Wesley Howard Shermantine, Jr.

(1966-02-24) February 24, 1966
ConvictionFirst degree murder with special circumstances (4 counts)
Criminal penaltyDeath
Details
Victims4–19+
Span of crimes
November 27, 1984  November 18, 1998 (Confirmed)
CountryUnited States
StatesCalifornia, Utah
Date apprehended
March 17, 1999

The Speed Freak Killers is the name given to serial killer duo Loren Herzog and Wesley Shermantine, together initially convicted of four murders — three jointly — and suspected in the deaths of as many as 72 people in and around San Joaquin County, California, based on a letter Shermantine wrote to a reporter in 2012. They received the "speed freak" moniker due to their habitual methamphetamine abuse. Herzog committed suicide in 2012. Shermantine remains on death row in San Quentin State Prison, in San Quentin, California.