The document summarizes three characters - Christy, Beth, and Dan - for a thriller story. Christy is described as a vulnerable 17-19 year old girl from a middle-class family who naively agrees to meet an unknown person. Beth is the hooded figure whose character is intentionally kept unknown and ominous. Dan is Christy's friend, also 17-19 and middle-class, who accompanies her to create realism before mysteriously disappearing.