The “Devil in the Ozarks” killer spent months biding his time and collecting supplies to prepare for his whirlwind escape from an Arkansas prison in late May that sparked a two-week manhunt, according to an internal review by prison officials released Friday.

Grant Hardin, a 56-year-old ex-cop, is back behind bars, continuing the rest of his hefty 80-year sentence for murder, rape and kidnapping after authorities apprehended him just two miles away from the prison after he spent two weeks on the lam. 4

Hardin successfully escaped from the North Central Unit prison in Calico Rock on May 25, by impersonating a prison guard. He wore a shoddy, homemade police uniform he scraped together using tools he collected during his work detail in the jailhouse’s prison, according to the priso

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