The Borellus Connection is a campaign for The Fall of DELTA GREEN, using the heroin trade and the United States Bureau of Narcotics and Dangerous Drugs as a narrative spine. The campaign runs from South-East Asia to the Middle East to Europe, as the Agents uncover the sinister machinations of a necromantic cult.

• Operation JADE PHOENIX (North-Eastern Burma): The CIA wants the Chinese-backed Shan warlord Li Bao Lung assassinated, and the Agents are tasked to escort a Marine sniper, Sergeant Adolph Lepus, to Li’s headquarters in the Wa state of northeast Burma, with orders to eliminate Li and return with proof of Li’s (and therefore Peking’s involvement in the opium trade. DELTA GREEN has identified one of Li’s advisers, Ming Yuan, as a Kuen-Yuin sorcerer; Li’s compound is a target-rich environment. The team must travel into Burma, avoiding detection en route, and penetrate the defences around Li’s compound to ensure Lepus has a clear shot on both targets.
• Operation ALONSO (Saigon, Vietnam): The NBDD assigns the Agents to surveil a drug summit at the Continental Palace hotel between Unione Corse bosses and emissaries from Marseille. While there, DELTA GREEN wants them to ascertain the status of the Cthulhu cult in the Rung Sat region south-east of the city.
• Operation HORUS HOURS (Hong Kong to Los Angeles, by air): Clues uncovered during ALONSO point to the existence of a heroin smuggling route running from Hong Kong to Los Angeles. The Agents have to hastily follow the couriers on the trans-Pacific flight via numerous stops and layovers, watching for the critical moment of the handover.
• Operation DE PROFUNDIS (Bozuktepe, Turkey): Using a BNDD investigation into opium smuggling as cover, DELTA GREEN sends the Agents to investigate the suicide and disappearance of archaeologist Charles Whiteman. He was excavating a ceremonial site at Bozuktepe before mysteriously killing himself; his body vanished en route back to England. What did he bring up from the depths before he died?
• Operation SECOND LOOK (Beirut, Lebanon): The Agents are sent in to surveil another drug deal and gather evidence; this time, an unreliable DELTA GREEN informant, Francois Genoud, is in the mix, and the Agents are ordered to remind him where his loyalties lie – but there’s more at stake here than they know, as sinister powers make a second attempt to uncover secrets of the Mythos…
• Operation PURITAN (Munich, Germany to Prague, Czechoslovakia): The Agents follow Unione Corse heroin shipments into Munich, but while there, another DELTA GREEN case officer tasks them to investigate unnatural contamination of the CIA’s QK-ACTIVE propaganda broadcasts into the Soviet Union. Who is broadcasting elements of the Necronomicon from a CIA-backed radio station? Finding the truth sends the Agents on a desperate race into Prague.
• Operation MISTRAL (Marseille, France): During the May ’68 riots, the Agents are sent to Marseille to investigate gang conflicts – and possible Unnatural activity in the troubled city.

and the mysterious Operation NEPENTHE…