October is haunted house season–time to step into your very own horror flick at the Vortex Haunted House (115 W. 27th St.) Buyer beware: This is only for the hard-core–you have to walk through alone, wear a protective mask and, yes, they are allowed to touch you. All together now: shriiiiiiek (Oct. 12-15, 7 p.m. to 11 p.m.).
Ink Plots at SVA (601 W. 26th St., Oct. 8-Nov. 6,) explores graphic novels.
Love opera? Catch the simulcast of Barcelona Gran Teatre del Liceu’s Carmen (2 p.m., 239 East 59th St.).
See New York’s Little Ireland at the Irish New York Walking Tour (Oct. 16, 11 a.m., St. Paul’s Chapel).