If Steven Spielberg’s “Catch Me If You Can” didn’t open with a “based on actual events” disclaimer, you’d never buy it. The story seems so outlandish that, were it pure fiction, audiences would dismiss it as Hollywood hokum. That acclaimed 2002 film was adapted into a musical that premiered on Broadway in 2011, and the show kicks off Spokane Civic Theatre’s new season tonight. Directed by Keith Dixon, “Catch Me If You Can” is a big, splashy affair following the exploits of Frank Abagnale Jr., a real-life con artist and forger who successfully masqueraded as a Pan Am pilot, a pediatrician, a college professor and an attorney while eluding the FBI throughout the 1960s.