When Johnny looks in the yearbook to find Ed, initially the photos are in an alternating layout. But when the camera cuts to a close shot of first Rachel and Scott's page, and then Ed's, the photos are in a nine-by-nine grid.
Although Rachel is apparently in "astral" form, the Old Man grabs her by the shoulders when she flees the first murder scene. She also opens the shop door in her astral form and touches Scott, and later chokes Marcus with a phone cord. The Old Man disappears like a ghost after he gives the wheelchair to Rachel, which raises the question: what kind of physicality do the astral forms have?