Comic Title: Hellblazer #12
Publisher: DC
Imprint: Vertigo
Cover Date: December 1988
On Sale Date: August 23, 1988 Shipping Date August 23, 1988
Source: Direct Currents, #7

Shipping Date August 25, 1988
Source: Amazing Heroes, #147

Copyright Date August 30, 1988
Source: Library of Congress, Copyright Office 1988

Cover Price: $1.25
Page Count: 32
Editor: Karen Berger

Title: "The Devil You Know..."
Pages: 24

Feature(s):
Hellblazer

Writer: Jamie Delano
Penciller: Richard Piers Rayner
Inker: Mark Buckingham
Letterer: Todd Klein
Colorist: Lovern Kindzierski

Reprinted In:
John Constantine, Hellblazer:The Devil You Know TPB (2007)
John Constantine, Hellblazer:The Devil You Know TPB (2012)

Feature Character(s)

• John Constantine (last appearance in Hellblazer #11; next appearance in Hellblazer #13)

Supporting Character(s)

• Ritchie Simpson (last appearance in Hellblazer #7; next appearance in Swamp Thing #84)

Villain(s)

• Nergal (last appearance in Hellblazer #10; next appearance in Swamp Thing #96)
• Agony and Ecstasy (heralds of Hell's triumvirate; next appearance in Sandman #4)

Other Character(s)

• Several angels (no further appearances)

Synopsis:
John Constantine hides alone in a camper fearing the wrath of Nergal. John makes contact with Ritchie Simpson who has been trapped in cyberspace since his body died. John enters the computer realm to communicate with Ritchie and devise a plan.

As a result of being tricked by Constantine, Nergal is now subject to the punishment of Hell. As the heralds of Hell try to drag him down, the demon hears Constantine issue a challenge. Agony and Ecstasy allow Nergal to face the mage.

Nergal finds Constantine in the trailer, but his body is now inhabited by Ritchie. Nergal enters the cyberworld to chase John. A chase ensues. John leads Nergal to the edge of Heaven where the angels intervene. Nergal is taken by the angels for punishment.

When John tries to return to his body, Ritchie won't let him have it. John tricks Ritchie into entering Nergal's body. Agony and Ecstasy then drag Ritchie to Hell.