Four years ago, Oliver Queen's mother died of cancer. After two months, Oliver hadn't moved on, and he'd been avoiding his role as Green Arrow in favor of drinking and moping. When John Diggle tried to convince him to go back to work, Oliver became angry, even though Diggle warned that the city needed its vigilante. Ricardo Diaz had been making major moves in Seattle, but he'd made a mistake, and John was able to learn where he could stop Diaz' next heroin shipment. Oliver suggested that John leave it to the police, prompting Diggle to remind that Oliver started this crusade, and he should finish it. Depressed, Oliver commented that it should be easy for John to walk away, after Roy Harper already did. Angrily, John swatted the bottle from Oliver's hand, reminding that Oliver had fired Roy