<P> Outside the prison , an unidentified individual lures a group of walkers towards the prison , breaking open the front gate 's lock to allow them inside . </P>
<P> Outside the prison , an unidentified individual lures a group of walkers towards the prison , breaking open the front gate 's lock to allow them inside . </P>
who let the walkers in the prison in season 3
who let the walkers in the prison in season 3
an unidentified individual
an unidentified individual