In LA, everyone knows Ms. Tarbell dispels dread. She finds a lot of it, but nothing like the unnamed horror she faces now. It arrives in a van. It has cameras, an agenda and the ability to change her life in awful ways. First written for a Lovecraft celebration, “Dread Unlocks” reveals the creeping uncontrollable dread in modern life, a dread Lovecraft himself might find too awful to contemplate.