Faultlines #5 (1997)

Tracey Farrand has survived her first direct encounter with the Spirit - a trip to a horrifying yet beautiful dimension, a direct link to a zone where everything grows and dies in vivid joy. It's taught her more about her abilities, but it's driven away the ghost of Charlie, whose death remains a mystery. Groping towards the killer's identity, Tracey finds herself zeroing in on Ayusha's lover, Susan, and Susan's aunt, Elaine, both of whom give off disturbing emanations. A final amazing vision makes one thing certain: Charlie rode to his death in Susan's car...