By the time you read this I'll be gone : an original novel [Murder, She Wrote Volume: #1]by Kuehn, Stephanie 

Paperback(Scholastic Press, 2022)

BTSB #: 534076 Available

Dewey: FAges: 12-16   
AR: 5.1 UG Lexile: 780

Genres: Mystery Fiction

Subjects: Mystery fiction Missing persons - Fiction Treasure hunt (Game) - Fiction Cold cases (Criminal investigation) - Fiction Mental illness - Fiction Maine - Fiction

Summary: Beatrice Fletcher, great-grandniece of famous mystery writer Jessica Fletcher, is obsessed with the unsolved mysteries and murders of Cabot Cove, Maine, but this time the case becomes personal when her best friend Jackson disappears and she must rely on the help of three students from the elite Broadmoor Academy to find him.

Good girl's guide to murder [Good Girls Guide To Murder Volume: Book 1]by Jackson, Holly 

Paperback(Delacorte Press, 2020)

BTSB #: 482748 Available

Dewey: FAges: 14-18   
AR: 5.4 UG Lexile: 700 HL

Genres: Mystery Fiction

Subjects: Cold cases (Criminal investigation) - Fiction Homicide - Fiction Mystery fiction High schools - Fiction

Summary: As her senior capstone project, Pip is determined to find the real killer in a closed, local murder case, that determined Sal Singh killed his popular girlfriend, Andie Bell, and then himself five years ago, but not everyone wants her meddling in the past.

Truly devious [Truly Devious Series Volume: 1]by Johnson, Maureen 

Paperback(HarperCollins, 2018)

BTSB #: 496863 Available

Dewey: FAges: 14-18   
AR: 4.9 UG Lexile: 680 HL

Genres: Mystery Fiction

Subjects: Cold cases (Criminal investigation) - Fiction Private schools - Fiction School stories Vermont - Fiction

Summary: When Stevie Bell, an amateur detective, begins her first year at a famous private school in Vermont, she sets a plan to solve the cold case involving the kidnapping of the founder's wife and daughter shortly after the school opened.