Lock, Stock, and Barrel

Devika Korrapati is told just before a murder trial that she must defend Buster Raynes, a man who lives life like an action hero and doesnt think murdering "goons" is that bad. Her opposition is Meriem Goldwyn, cool prosecutor who doesnt let the pressure get to her. Can Devika solve the barrel-based mystery and prove Buster innocent? (For the 4th Tropey Jam. The theme was "Explosive Barrels")