Sky Masterson hides behind his hat after Sarah Brown, played by Brynlea Houser, calls him by his real name, Obadiah, during Tuesday night's dress rehearsal of "Guys and Dolls" at Parkway High School. Performances are at 7 p.m. Friday, at 2 p.m. and 7 p.m. Saturday and at 2 p.m. Sunday at the high school auditorium. Tickets, available at the door or on the high school's website, are $8 for adults and $6 for students.