cover of Before She Disappeared by Lisa Gardner

Frankie is a recovering alcoholic who has found a new obsession to occupy her time: researching cold cases to find missing people. This takes her to a rough neighborhood in Boston where she is investigating the disappearance of a young Haitian woman. Frankie discovers this is not the only teenage girl to disappear, and even with all the police technology, her street-smarts get people talking to her in ways they don’t open up to the police. She puts the pieces together to realize this girl may still be alive, and figure out why the girls were kidnapped in the first place. This is a fun, fast-paced mystery that will keep you guessing until the end.