Which TV channel aired the second season of Dexter, the Miami-set crime series, in the USA?
Resistance Is Futile (Dexter): "Resistance Is Futile" is the ninth episode of the second season and twenty-first overall episode of the American television drama series "Dexter", which first aired on 25 November 2007 on Showtime in the United States. Dexter (TV series):  Set in Miami, the series centers on Dexter Morgan (Michael C. Hall), a forensic technician specializing in blood spatter pattern analysis for the fictional Miami Metro Police Department, who leads a secret parallel life as a vigilante serial killer, hunting down murderers who have slipped through the cracks of the justice system.
Showtime