Heroes and Villains

Plot:

Sex offense ex-con Tyler Faris's corpse is found on the street. He was cut in half by sword, in front of a former victim, by a man in superhero uniform, which even Castle didn't recognize as Lonely Vengeance, the hero of an Internet site authored by Sean Etel, a pseudonym. Actually, several people prance around New York in Lonely suits. The team investigates them and Tyler's enemies, such as his former employer Tony 'The Butcher' Valtini, thus proving new captain Victoria Gates's lack of confidence in them unwarranted.