Complex sentence: Arctor is an undercover detective who works at the local police station; he tries to blend in with his housemates Barris and Luckman, becoming addicted to "Substance D" in the process.
Split into simpler sentences: Arctor is an undercover detective who works at the local Police Station. Arctor tries to blend in with his housemates Barris and Luckman, becoming addicted to "Substance D" in the process.