The hljb_v1_1.exe file you have requested: Modifications / Other Mods / Jailbreak v1.1 beta - 3.26mb is not available. Perhaps try browsing all files for the game Half-Life and upload any files you want to share or are missing. This is the only information we could locate:
Each team has a base with a jail, and whenever you kill an enemy, he goes in your jail. Whenever you get killed, you go in the enemy jail.