Running_out_of_time

: 13-year-old Jessie Keyser believes she lives in a frontier village in 1840 . When a diphtheria outbreak hits, her mother reveals it is actually 1996 .

: Scientists were secretly using the village as a human experiment to study immune systems without modern medicine. running_out_of_time

The most common reference for "long story" is Margaret Peterson Haddix’s 1995 novel. : 13-year-old Jessie Keyser believes she lives in