Nocebo

While Christine, a children's fashion designer, takes a call, a dog approaches and spreads ticks onto her before vanishing. One tick attaches itself to the nape of her neck, subsequently debilitating Christine with a mysterious illness. A woman named Diana arrives at her home, claiming to be the caregiver Christine had hired. Christine's husband, Felix, and daughter, Bobs, are both distrustful of Diana. After settling in, Diana unpacks her suitcase, revealing a collection of relics and folk magic ingredients. She uses a matchbox to summon and capture the tick that bit Christine, then assembles an altar in her room's fireplace and uses its ashes in a ritual to commune with the unseen spirit of a child.