Batman Issue 648

"All They Do is Watch Us Kill, Part 1"
Alfred received a package from Jason - two first edition books. Only Dick and Jason knew of the collection he and Bruce had. He immediately called Bruce, who dropped everything and sped home. Black Mask, with Red Hood watching, killed his own inner circle.

After scanning the boxes, Alfred told Batman the contents - a lock of green hair and an address. He relayed the latter to him. Black Mask and Hood got into an argument which escalated into a brawl. Todd got a pool cue stuck in his back; Sionis got a few slashes from his adversary's knife. Batman found them struggling with the knife, but when he got to them, Jason was laying on the floor with it stuck in his sternum.

Individuals

 * Batman
 * Black Mask
 * Red Hood
 * Alfred Pennyworth

Locations

 * Gotham City
 * Wayne Manor
 * Batcave

Vehicles

 * Batmobile