The star of Nick CassavetesYellow is wife/co-writer Heather Wahlquist, playing “a pill-popping school teacher and mother of four who finds herself losing her mind while trying to depict her real life from her altered states of consciousness.” The TIFF attraction costars Sienna Miller, Melanie Griffith, Gena Rowlands, Lucy Punch, David Morse and Ray Liotta.