In the first seasons[vague] the tone was lighter, especially when comical characters such as police informants Noogie Lamont (Charlie Barnett) and Izzy Moreno (Martin Ferrero) appeared. Later the content was darker and cynical, with Crockett and Tubbs fighting corruption, and storylines emphasizing the aspect of human tragedy behind a crime. The darker episodes sometimes lacked a denouement, each episode ending abruptly after a climax involving violence and death, often giving the episodes a despairing and sometimes nihilistic feel, despite the trademark glamor and conspicuous wealth.