'Twisted' is similar to 'Pretty Little Liars' in that it's about trying to find out who did it, but it's more about the human relationships between characters and the strain that things can put on them. It's also a little bit of a social commentary piece, because it covers very timely issues.
Fact-checking doesn't exist primarily because some of us are liars and cheats. It exists because writers will be writers, much as they may mean to be historians.
