Running_out_of_time [ TESTED × 2024 ]

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

: 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 . running_out_of_time

: Jessie must escape the "historical preserve" (a tourist attraction where residents are watched by hidden cameras) to find modern medicine. : Scientists were secretly using the village as

The most common reference for "long story" is Margaret Peterson Haddix’s 1995 novel. running_out_of_time