In A Spectral Glimpse, the art hints rather than depicts: colored light streaked across ceiling tiles, the sun flaring on a camera's lens, a chalk drawing that disappears. In this show, Jim O'Donnell—one of our great independent curators—introduces five artists to Seattle (David Dupuis, Bari Ziperstein, Adam Ekberg, Lucy Pullen, and Leyla Cárdenas), and showcases new projects by local artists Brad Biancardi and Ariana Page Russell. (Platform Gallery, 114 Third Ave S, 323-2808. 11 am–5:30 pm, free.)