It features a dead police detective whose mission, as assigned by the Devil, is to return to Hell 113 souls who have escaped to Earth.
In 1983, Ezekiel "Zeke" Stone (Peter Horton) was a New York City Police Robbery-Homicide detective whose wife, Rosalyn, was raped.
The souls cannot be killed, and injuries can only be inflicted to their eyes (it is shown the Devil can alter this rule somewhat, as he did in the episode "Encore"), by the living or dead.
In Stone's case, this means he awakens to find his badge, his fully loaded service pistol, and $36.27—the amount of money he was carrying when he was murdered—on his person.
Ezekiel 36:27 says "And I will put my Spirit in you and move you to follow my decrees and be careful to keep my laws" which is a succinct summation of Stone's new role.
However this rule is inconsistently applied, as he takes his coat to a tailor in "Repentance", attempting to have it mended on a different day than when the damage occurred.
Much of the series' internal conflict was generated by Stone's inability to stay away from his wife, Rosalyn (Stacy Haiduk), who was still alive.
Near the end of the season/series, Ash was revealed to be the priestess who engineered the escape from Hell by using her implied romance with the Devil, though he insisted he never loved anyone but God.
Since cancellation, Brimstone reruns have aired on Syfy (originally the Sci Fi Channel) in the United States from the summer of 1999 onward.
The reruns have no set schedule, but are usually aired in marathons during the channel's seasonal events like "Creatureland", "Inhumanland" and "The 31 Days of Halloween".