Retired horror author suffering from dementia, residing in a secluded house. She projects her novel's protagonist onto Lily, calling her Polly. She accuses Polly of betrayal and is haunted by her ghost before ultimately dying in the house alongside Lily.
Iris's past identity as a horror author clashes with her present dementia-stricken state.
Mr. Waxcap manages Iris's property and handles her domestic arrangements.
Lily is employed as the primary caregiver for Iris, establishing a formal professional bond.