Cagney & Lacey (1982)

S2E4 High Steel

When a construction worker plunges to his death, the general consensus is that it was an accident, and even Isbecki believes it, allowing the women to lead the investigation. However, Harvey, who knew the victim, suspects foul play. As they dig deeper, they discover the worker was involved in some shady dealings. This prompts Harvey and Mary Beth to visit the construction site themselves for a closer look.